ALLEN-BRADLEY Allen-Bradley Dataliner Message Display DL20 Series User Manual
Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment. “Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls” (Publication SGI-1.1) describes some important differences between solid state equipment and hard–wired electromechanical devices.
Table of Contents Dataliner Message Display DL20 Series A–B Using This Manual Chapter 1 Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conventions Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Publications . . . . . . . . .
Table of Contents Dataliner Message Display DL20 Series Creating and Editing Messages ii Chapter 4 Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Entering the Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifying Message Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Line Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Line-Scroll Mode . . . . . . . .
Table of Contents Dataliner Message Displays DL20 Series Run Mode Chapter 5 Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Entering the Run Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Autorun Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Autorun Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Background Message . . . . . . . . . . . . . . . .
Table of Contents Dataliner Message Display DL20 Series The Serial Port Chapter 6 Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Serial Port Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Serial Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Selecting Serial Port Parameters . . . . .
Table of Contents Dataliner Message Displays DL20 Series Special Functions Chapter 8 Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Special Functions Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Print Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tape Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using Data Recorders . . . . . . . . . .
Table of Contents Dataliner Message Display DL20 Series Specifications Chapter 10 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parallel Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ETS Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Serial Port . . . .
Table of Contents Dataliner Message Displays DL20 Series Setting Keyboard Baud Rate Appendix E Message Display Worksheets Appendix F Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Setting Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . One Line Worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Two Line Worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Dataliner Message Display DL20 Series Figures 3.1 4.1 6.1 7.1 7.2 7.3 7.4 7.5 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 9.10 9.11 9.12 B.1 B.2 B.3 B.4 B.5 C.1 D.1 D.2 D.3 D.4 D.5 viii Menu Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Edit Mode Menu for 2 Line DL20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Serial Port Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Dataliner Message Displays DL20 Series D.6 D.7 G.1 G.2 G.3 G.4 G.5 G.6 G.7 H.1 H.2 Display Mounted Converter (Catalog No. 2706-NG2) Dimensions . Enclosure Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Triggering Messages Using Individual Inputs (PLC-2) . . . . . . . . . . . . PLC-2 Ladder Program (Messages with Variable Data) . . . . . . . . . . . Triggering Messages Using Individual Inputs (PLC-5) . . . . . . . . . . . .
Table of Contents Dataliner Message Display DL20 Series Tables 1.A 1.B 2.A 4.A 7.A 7.B 7.C 7.D 7.E 7.F 7.G 8.A 8.B 8.C 8.D G.A G.B H.A x Chapter Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Edit Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter A–B 1 Using this Manual Chapter Objectives Read this chapter to familiarize yourself with the rest of the manual. You will learn about: • • • • Manual Overview Contents of this manual Intended audience Conventions used Related publications This manual instructs you on how to install and use your Dataliner DL20 Series G display. This manual is divided into the following chapters. Table 1.
Chapter 1 Using this Manual Intended Audience No special knowledge is needed to enter or edit messages. However, since the Dataliner message display must be connected to peripheral equipment, you should be familiar with computer communication terminology. Conventions Used The following conventions are used: • Messages that are displayed on the DL20 are shown centered and in bold characters.
Chapter A–B 2 Introduction to the DL20 Chapter Objectives This chapter describes some of the key features and operating capabilities of the DL20. For more detailed information, refer to the section of the manual that describes the use of the feature or operating capability.
Chapter 2 Introduction to the DL20 Message Editing Software You configure and enter messages into the DL20 by attaching an optional keyboard, RS-232 CRT, or dumb terminal. The DL20 display prompts you with easy to follow questions and instructions simplifying setup and configuration. Using a terminal or printer, you can list operating parameters such as baud rate or parity. A DL20 time and date clock lets you display and/or print the time and date with a message.
Chapter 2 Introduction to the DL20 Host and Slave Devices Addressable Master The addressable master feature allows you to connect 100 DL20s to a single RS-422 port on the controller. Each display has its own unique address. The controller can command any one, or all of the DL20s on the network to display a message. Slave Mode Master The DL20 can operate as a slave device. In run mode, special commands place the DL20 into slave mode.
Chapter 2 Introduction to the DL20 Auxiliary Devices Messages that display on the DL20 can be sent to a printer with the time and date. On large machines, or on production lines, you may want to use a remote display. The DL20 can connect to 100 slave DL10 displays (up to 4000 feet away). Each DL10 can have a different address. You can define, on a message-by-message basis, the slave display on which a triggered message appears. Triggered messages can be sent to individual or all slaves.
Chapter 2 Introduction to the DL20 Message Options Background Message The background message is a user-defined message that automatically displays when no other messages are being displayed. Invisible Message Invisible messages do not appear on the display when triggered, nor do they affect what is on the display. Invisible messages can be sent to slaves, printed, or saved in the Historical Event Stack. Special Messages Sixteen preprogrammed messages are available to trigger specific functions.
Chapter 2 Introduction to the DL20 Accessories Table 2.A lists the optional accessories. Table 2.A Accessories Item DL20 Cable DL20 Cable Description Connects Allen-Bradley Industrial Terminals T1 through T4 or most DTE type dumb terminals. (Male 25 pin D-shell) Connects Allen-Bradley Terminals 1784-T45, -T47, -T50, -T60, other IBM compatibles or DEC VT52, VT100, or VT101 Terminals. (Female 25-pin D-shell) Catalog No.
Chapter A–B 3 Getting Started Chapter Objectives This chapter describes how to connect and powerup the DL20 for desktop message programming. Desktop Hookup To set up the DL20 for desktop use, you need: • • Three-prong AC line cord Keyboard ( Catalog No.
Chapter 3 Getting Started Connect Programmer To create messages, you need to connect a keyboard or attach a programming terminal. Programming Terminal SERIAL COMM PORT RS RS 422 422 – + 4 Keyboard Catalog No. 2706-NK1, -NK2 5 RS 232 OUT 6 RS +12 232 VDC IN GND OUT 7 8 9 Cable - See Table 2.A Programming Terminals The programming cable hooks up similarly. One end of your cable has a D type connector which mates to a D connector on your terminal.
Chapter 3 Getting Started Initial Startup When power is applied, the DL20 automatically enters a self test mode and displays the firmware revision number of the DL20 and the number of lines. TESTING UNIT 3.00 2L If the BATTERY LOW message is displayed, return the DL20 for battery replacement. The battery is not user-serviceable. BATTERY OK All display segments light up briefly. SELF TEST OK Note: If PRESS 9 @ 9600 BAUD is displayed, press the number [9] and the DL20 will continue normally.
Chapter 3 Getting Started The master address of the DL20 then appears. A 0 indicates that a master address was not selected. Chapter 8 tells how to select a master address. MASTER ADDRESS: 0 Finally, this prompt appears (unless the DL20 was powered down in the run mode.): EDIT? If the DL20 was powered down in the run mode, this prompt appears: AUTORUN possibly followed by other messages. To return to edit mode, press [Esc] on your terminal three times. The EDIT? prompt will appear.
Chapter 3 Getting Started Numeric Prompts A numeric prompt requires that you enter a number followed by [Return]. The DL20 evaluates 0 through 1022 as valid numeric responses. For example: MESSAGE NUMBER: 0 If you wanted to enter 27, here is what would happen: Type [2]. MESSAGE NUMBER: 2 Type [7]. MESSAGE NUMBER: 27 Notice how the number scrolls in from the right. You must press [Return] to accept the response. If you wanted to enter the number 5, you could type it over the old response by typing 0005.
Chapter 3 Getting Started Main Menu Figure 3.1 shows the main menu flowchart. Figure 3.1 Menu Flowchart Powerup EDIT? Y Edit Mode Details in Chapter 4 N RUN? N Y Run Mode Details in Chapter 5 SPECIAL FUNCTIONS? N Back to EDIT? Prompt Y Special Functions Details in Chapter 8 [Esc] [Esc] [Esc] Back to EDIT? Prompt Three selections are available from the main menu (edit mode, run mode, and special functions).
Chapter A–B 4 Creating and Editing Messages Chapter Objectives This chapter describes how to create, edit, and save messages. Entering the Editor The DL20 can store up to 1022 messages of varying lengths. Each message consists of: • • • message number (1 - 1022) message text message attributes (control how message displays) The process of entering and changing messages in the DL20 is called message editing. You can add or delete characters or words at any point in a message.
Chapter 4 Creating and Editing Messages Figure 4.1 Edit Mode Menu for 2 Line DL20 EDIT? Y ① ① N ALL LINES? ① N LINE 1 ONLY? LINE 2 ONLY? Y Y ① N Y USE LEAST USED? Y MESSAGE NUMBER: (Enter Number) SCROLL? If no message exists Shows portion of existing message. To edit or change the message, use Edit Commands shown in Table 4.A.
Chapter 4 Creating and Editing Messages Specifying Message Attributes Message attributes are properties that an individual message may have. You are prompted for each attribute, one at a time. Some attributes are mutually exclusive-you can select either one, but not both. Line Selection If using a two or four line display, you must first specify the line or lines on which the message is to appear.
Chapter 4 Creating and Editing Messages Specifying Message Attributes Line-Scroll Mode If you do not select ALL LINES, but choose to have a message displayed on one line only, you will be asked to select line or scroll mode: SCROLL? N At this point, you must decide whether the message is to be a line mode message or a scroll mode message. Scroll Mode Select scroll mode to scroll a message across the display one character at a time. Characters enter from the right of the display and exit on the left.
Chapter 4 Creating and Editing Messages Slave Messages If you answer No to the print messages prompt, you are asked if you want to send messages to slave displays when triggered. It is possible to connect one or more DL10 slave displays to the DL20. Messages displayed on the DL20 can be sent to the slaves. In addition, a message can display on a particular slave display. Since there is only one serial port, a message cannot be both printed and sent to a slave.
Chapter 4 Creating and Editing Messages Specifying Message Attributes Auto Clear Auto clear controls whether the display clears after a message displays: AUTO CLEAR? N If you answer Yes, the DL20 clears the display after the message has been displayed for the specified wait time. If you answer No, the last line or lines of the message are displayed until replaced by another message. Auto Repeat Auto repeat allows a message to display repeatedly for an indefinite period of time.
Chapter 4 Creating and Editing Messages Chaining Messages The chain attribute allows a series of messages to display by triggering only one message. A message which automatically repeats itself cannot be chained to another message. If you answer Yes to auto repeat, the chain message prompt will not appear.
Chapter 4 Creating and Editing Messages Specifying Message Attributes Here are some examples of AUTO REPEAT and CHAIN MSG attributes. In these examples, there are six messages: Message 1: chained to 2 Message 2: chained to 4 Message 3: chained to 4 Message 4: neither chain nor auto repeat selected Message 5: chained to 6 Message 6: auto repeat Triggering a message causes it to be displayed. To illustrate the operation of an auto repeat message, we will trigger message number 6.
Chapter 4 Creating and Editing Messages Flashing Messages The next attribute prompt is self explanatory: FLASH MSG? N Answering Yes to this prompt causes the message to flash once per second when the message is triggered. Relay Operation ! ATTENTION: Use relay for annunciator purposes only. Do not use it for control. The DL20 has a single-throw, double-pole internal relay. This relay can be energized by messages.
Chapter 4 Creating and Editing Messages Specifying Message Attributes Historical Event Recording The Historical Event Recording prompt determines whether to place a message in the Historical Event Recording Stack for later printing. STACK MSG? N If you answer Yes, every time the message is triggered, it is displayed and sent to a printer or slave as determined by the other message attributes. It is also placed in the Historical Event Recording Stack to be printed out later.
Chapter 4 Creating and Editing Messages Editing Messages After you have specified all the attributes, the DL20 displays: ENTER MSG for a few seconds. This alerts you to the fact that you are ready to enter the message. Enter messages at the cursor position. The cursor initially appears as a reverse space (all dots lit up). Most edit commands either affect the character at the cursor position (which is called the cursor character), or they move the cursor to different characters within the message.
Chapter 4 Creating and Editing Messages Moving the Cursor Move Cursor Forward One Space (Ctrl L) Move the cursor forward one character position by typing control L. If the cursor is positioned at the last character in the message, the command is ignored. Many terminals, other than the keyboards (Catalog No. 2706-NK1, -NK2), have a key with a forward arrow (→) marked on them. This key may move the cursor forward (depending upon terminal type).
Chapter 4 Creating and Editing Messages Deleting a Character (Ctrl D) The delete character command (control D) removes the character at the cursor position from the message. The cursor then moves to the next character. If the character deleted was the last character in the message, the cursor moves to the new last character. You can delete an entire message using the delete command. However, the message remains in memory and exists as a message with no characters; a null message.
Chapter 4 Creating and Editing Messages Setting New Message Attributes (Ctrl A) You may need to change the attributes of a message that you are editing. The new message attributes command (control A), allows you to change the message attributes without retyping the message. The command provides a series of prompts just like you saw when you entered a new message. However, the defaults for the prompts now match the attributes currently in effect for this message.
Chapter 4 Creating and Editing Messages Imbedding Variable Data (Ctrl V) Variable data from the programmable controller may be imbedded in a message. Up to twenty valid variables (total) per message may be displayed or printed this way. To imbed a variable in a particular location, type control V. The control V will be shown as an up arrow (↑). When the message is triggered, the first numerical variable in the data queue replaces the up arrow.
Chapter 4 Creating and Editing Messages You are then prompted for the decimal place: DECIMAL PLACE: 0 The valid settings range from 0 thru 6. If the decimal position is selected to be zero, no decimal place will be shown in the field. The value entered for the decimal position is always the location that the decimal place occupies. That is, entering 1 for decimal position places the decimal in the rightmost character position, i. e. the last character of the field.
Chapter 4 Creating and Editing Messages Imbedding Time and Date (Ctrl T) Imbed the time and date in a message, by typing a [Ctrl] [T] at the location in the message that you want the time displayed at. The control T is displayed as the character @. When the message is displayed, the time and date replace the @ character. The time and date string has the following format: HH;MM;SS DDD MMM DT YEAR where: HH = hour MM = minute SS = second DDD = day (MON,TUE, etc.) MMM is the month (JAN, FEB, etc.
Chapter 4 Creating and Editing Messages Upper Case Lock-Unlock (Ctrl U) Some people prefer all uppercase type for all messages. Others prefer all uppercase type for just important messages. The optional keyboards (Catalog No. 2706-NK1, -NK2) have a shift-lock key. If you are using another type of terminal, type [Ctrl] [U], and this prompt is displayed: UPCASE ONLY After three seconds (or press any key) the prompt will go away. The edit window is restored with the cursor where you left it last.
Chapter 4 Creating and Editing Messages Exiting the Editor (Ctrl Q) To exit the edit mode, type [Ctrl] [Q]. The edit session terminates, and the message is saved. A notice is displayed and the EDIT? prompt reappears. EDIT DONE EDIT? Press [Esc] three times to exit from the editor. The message under edit is saved, but a prompt is not displayed. Entering an Example Message Let’s go through an example edit session. This should clarify the operation of the editor.
Chapter 4 Creating and Editing Messages We will set this message up so that the display is cleared when the message is finished. Type [Y]. AUTO CLEAR? Y Now press [Return]. AUTO REPEAT? N We do not want the message to continually repeat so just press [Return]. CHAIN MSG? N We do not want to chain this message, so just press [Return]. FLASH MSG? N We do not want the message to flash, so just press [Return].
Chapter 4 Creating and Editing Messages Try moving the cursor. Forward one space (control L), backward one space (control H), up a line (control K), and down a line (control J). Type a few backspace characters (control H) and watch the cursor move back. ALLEN-BRADLEY BULLETIN 2706 MESSAGE DISPLAYS Here we typed backspace six times. Now type up a line (control K). ALLEN-BRADLEY BULLETIN 2706 MESSAGE DISPLAYS Change the words BULLETIN 2706 to DATALINER. First position the cursor to the B in BULLETIN.
Chapter 4 Creating and Editing Messages Estimating Memory Usage The example below shows how to estimate memory usage. Every message programmed has 14 bytes of overhead. Also, every space, control T, control V, and control X also use one byte. Example: DL20 contains 475 messages with an average length of 35 characters.
Chapter A–B 5 Run Mode Chapter Objectives This chapter describes how to trigger and display previously entered messages. Entering the Run Mode To place the DL20 in the run mode, answer Yes to the run mode prompt: RUN? Y The DL20 clears the display and enters the run mode. Autorun Feature The DL20 remains in the run mode indefinitely. If power fails, the DL20 remembers that it was in the run mode. On powerup, it resumes the run mode, if it passes the powerup self diagnostics.
Chapter 5 Run Mode Autorun Message A message can be specified as an autorun message. This message is triggered immediately after entering run mode. It is always the first message in the queue, regardless of the state of the parallel port data lines. Use this feature as a method of displaying an initial message upon powerup. An autorun message is also useful when using the DL20 for demonstrations or as an information display.
Chapter 5 Run Mode Triggers and Queues In run mode, the DL20 waits for commands from the host. These commands can: • • Trigger a message display Contain variable display data To get a better idea of how the DL20 works, you must understand the concept of a queue. A queue is simply an ordered pile of data. Information can be put in or taken out of the queue. Information is always taken out in the same order that it is put in, (i.e. first-in first-out).
Chapter 5 Run Mode Unloading Queues A queued message is displayed immediately if there are no messages in the queue, or as soon as any previously-queued messages have been completely executed. The message may also be shown on slave displays, or it may be listed on a printer. The message is evaluated up to the first control V. Boiler pressure is At this point, the variable queue still looks like this: First entry: Second entry: 775 451 Now, the first entry is taken from the queue.
Chapter 5 Run Mode Queuing Examples In this example, three messages are triggered in rapid succession. First, the message 1 is triggered. The message queue looks like this: First entry: 1 The entry is removed from the queue immediately. Message 1 is displayed. While it is being displayed, a command to trigger message 2 is queued. The message queue now looks like this: First entry: 2 This entry is NOT removed, because message 1 is still being displayed and its wait time has not elapsed.
Chapter 5 Run Mode Special Messages Message numbers 1-16 are special messages which provide a variety of functions. Special messages are disabled by entering a regular message in their place. Once a regular message is created, it must be erased to regain the function of the special message. For example, if a user message is stored as message 3, triggering message 3 no longer resets the DL20. Note: Use Control E to erase a regular message.
Chapter 5 Run Mode Special Message #3: Reset DL20 Special message #3 has the same effect as cycling power. This is useful if you want to run the powerup self test. This is sometimes useful for systems that have a system test function. If you send the DL20 special message #3 when the test button is pressed, the display will go through its self tests.
Chapter 5 Run Mode Special Messages Special Message #6: Stop Printing HE Stack Special message #6 stops the printing of the Historical Event (HE) Stack. Special message #6 terminates the printout, but whatever message is currently being printed prints out in its entirety. Normal message run mode resumes when printing ends.
Chapter 5 Run Mode Special Message #9: Clear Queues, Halt Run Mode Use special message #9 when dynamic chaining has been selected. Special message #9 inhibits the unqueuing and display of incoming message triggers. Message and data queues are also cleared. Special messages #8 and #9 work together to start and stop message display. Use these messages when dynamic chaining is enabled. The dynamic chaining mode is described in more detail later in this chapter.
Chapter 5 Run Mode Special Messages Setting Clock Using Special Messages Special messages #12 and #13 allow you to set the clock remotely from the programmable controller either: • • Interactively. This is most useful when the programmable controller does not know the time, but the operator does. With variable data. This is useful when the host controlling the DL20 does have the time available. Special Message 12: Interactive Clock Setting Special message #12 allows the clock to be set interactively.
Chapter 5 Run Mode Special Message 13: Set Clock Using Variable Data Hosts that have real time clocks should use special message #13 to set the clock. To set the clock using special message #13, up to eight variables must be sent. These eight variables represent (in order) seconds, minutes, 12/24-hours mode, hours, day, date, month and year. Table 5.A lists the variable order and the allowable data ranges: Table 5.
Chapter 5 Run Mode Special Messages Special Message #15: Enable HE Stack Special message #15 enables the Historical Event Recording Stack. After special message #15 is triggered, messages designated as stackable messages are stored in the Historical Event Stack as they are triggered. When the DL20 enters run mode, this is the default condition. It is not necessary to trigger special message #15 to enable the Historical Event Stack.
Chapter 5 Run Mode Dynamic Chaining Dynamic chaining allows the DL20 to continuously repeat a sequence of messages over and over again. These may be fault or status messages that have been triggered over a period of time. Select dynamic chaining using the Set Up Master special function as described in Chapter 8. With dynamic chaining enabled, messages are displayed as they are triggered. These messages are displayed continuously according to the selected attributes (scroll or line mode, wait time, etc.).
Chapter 5 Run Mode Dynamic Chaining Example #1 This example does not use special messages #8 and #9, therefore, messages may not be displayed in the exact order in which they are triggered. This is acceptable for most applications, and requires a more simple application program in the host controller. Dynamic chaining must be enabled. Event 1: A machine or system fault occurs and message #21 is triggered.
Chapter 5 Run Mode Dynamic Chaining Example #2 This example uses special message #8 and #9. This insures that the first message triggered is the first displayed, and the remaining messages are also displayed in the same order in which they are triggered. The messages are continuously repeated in this order. Dynamic chaining mode must be enabled. Event 1: Under normal conditions (with dynamic chaining enabled) the DL20 could be waiting for any fault or status message trigger.
Chapter 5 Run Mode Illegal Message Trigger Indication An error message is displayed when a non-existing message is triggered. This feature is selected by responding with a [Y] to the FLAG ERRORS? prompt in the Set Up Master special function. Then, if an invalid message trigger is received, the message ILLEGAL MSG TRIGGER is displayed on line one. The message is displayed until a valid message trigger is received. If the error reporting is not enabled, invalid message triggers are ignored.
Chapter 5 Run Mode Historical Event Recording Historical Event Recording allows you to designate messages as stackable messages. These messages are triggered, displayed, and stored. Later, all the messages in this stack can be printed on demand. Any variable data contained within a message, such as time of day, is also stored. Use Historical Event Recording feature when you want a printed record of all the error messages or a report generated from your application.
Chapter A–B 6 The Serial Port Chapter Objectives This chapter describes the serial port of the DL20. You can use the serial port to send or receive data using RS-232 or RS-422 standards. It describes: • • • • • Serial Port Connectors Serial port connectors How to connect devices to the serial port Serial port data formats Addressable master feature Slave displays Figure 6.1 shows the serial port connectors of the DL20.
Chapter 6 The Serial Port Serial Data Format The format is the same for both the RS-232 and RS-422 ports. The device connected to either serial port must match the DL20. The transmission standards used by the DL20 are: Baud Rate: Data Length: Parity: Stop Bits: 300, 1200, or 9600 8 Bits (including parity if any) Odd, Even, None 1 Note: Literature for non Allen-Bradley terminals may be misleading. Setting eight data bits and selecting parity sometimes results in nine total data bits.
Chapter 6 The Serial Port The control code indicates whether the data is a message number or a variable. The ASCII string represents the message number or variable. For example, the number 4,286 would be sent out like this: ASCII 4 2 8 6 Decimal Equivalent: 52 50 56 54 Hex Equivalent: 34 32 38 36 Octal Equivalent: 64 62 70 66 If the data is a message number, it must contain one or more digits. If it contains more than four digits, only the last four are accepted.
Chapter 6 The Serial Port Using the Serial Port Serial Data Example Here is an example of a message containing variables, which is triggered using the serial link. The example message (number 4) is: Voltage = ↑, current = ↑ To trigger this message, the following strings are sent: ASCII (Ctrl V) 4 1 6 0 [Return] Decimal Equivalent: 22 52 49 54 48 13 Hex Equivalent: 16 34 31 36 30 0D Octal Equivalent: 26 64 61 66 60 15 This queues up 4160 as the “voltage” value.
Chapter 6 The Serial Port Addressable Master The addressable master option allows you to uniquely address over 100 DL20s linked to the same host. A message trigger is only recognized by the similarly addressed master display. To set up a master address, use the special function Set Up Master. A master address can be any number from 1 to 127 with some exceptions. The address assigned in the sequence is the decimal value of the associated ASCII symbol.
Chapter 6 The Serial Port Slave Mode When DL20s are connected on an RS-422 network, the port must be set as an input using the Set Up Master special function. Since DL10 slaves are addressed using the RS-422 port as an output, using DL20s as addressable masters precludes the use of this port for sending data out to DL10 slaves.
Chapter 6 The Serial Port Control F is a flash code. If you want flashing characters, send a control F with the 20 character packet. Every character on the specified line will flash. A second control F cancels flash mode. Control R is the reset command. After receiving a control R within the 20 character packet, all the data registers in the DL20 are cleared.
Chapter A–B 7 The Parallel Port Chapter Objectives This chapter describes the parallel port: • • • • • Parallel Port Description Data formats Electrical requirements Timing requirements AC input converters Sampling modes The DL20 can connect to a programmable controller with parallel outputs. These outputs can trigger messages and transfer variable data. Figure 7.1 shows the parallel port terminals. Figure 7.
Chapter 7 The Parallel Port Using the Parallel Port Figure 7.2 illustrates a typical example of using discrete I/O outputs with the DL20 parallel port: Figure 7.
Chapter 7 The Parallel Port Table 7.A Voltage Levels for Each Logic State (Typical Input Resistance = 10K Ohms) Voltage Range Low True Logic Value High True Logic Value 0-1.5 VDC 1 or ON 0 or OFF 1.5 - 3.5 VDC Indeterminate Indeterminate 3.5 - 30 VDC 0 or OFF 1 or ON As Table 7.A illustrates, the DL20 can accept high true (higher voltage level=1) or low true (lower voltage level=1) logic. Chapter 8 explains how to set parallel port logic levels.
Chapter 7 The Parallel Port Using the Parallel Port Data Line Values (Binary) Table 7.B shows the value of the data lines using binary data inputs. Table 7.B Binary Data Line Values Data Line D0 Data Line Value 1 D1 2 D2 4 D3 8 D4 16 D5 32 D6 64 D7 128 D8 256 D9 512 Comments Least Significant Bit Most Significant Bit The binary value of the data lines is the sum of the individual data lines: D0 + D1 + D2 + D3 + D4 + D5 + D6 + D7 +D8 + D9 = Value.
Chapter 7 The Parallel Port Parallel Port Strobe Lines If the DL20 receives a value like 145, this could mean either a variable 145 or a message number 145. The function of the strobe lines (MS0 and MS1) is to tell the DL20 what to do with information on the data lines (D0-D9). When strobing over a variable, the high order data should be strobed over first. The variable will be queued up after the low byte data is strobed in.
Chapter 7 The Parallel Port Using the Parallel Port Table 7.E Binary Data Line Values Using HDAT Strobe Data Line D0 Value 256 D1 512 D2 1024 D3 2048 D4 4096 D5 8192 D6 16384 D7 Sign Bit: 0 = Positive D8 D9 1= Negative D8 and D9 are not used when variable data is strobed in. Set both lines in s to 0. The value is the sum of D0 through D6: D0 + D1 + D2 + D3 + D4 + D5 + D6 = Value. The seventh wire, D7, is called the sign bit -- numbers can be positive or negative.
Chapter 7 The Parallel Port Edge Triggered Strobe Note: Refer to event driven sampling in this chapter for a description of how to use the ETS inputs. The edge triggered strobe (ETS) is typically used with non Allen-Bradley programmable controllers. The DL20 can be set up to either look at the data and strobe lines periodically (time-driven sampling); or based on a signal present on edge triggered strobe (event-driven sampling).
Chapter 7 The Parallel Port Input Converters The parallel input circuit allows inputs to accept DC input voltages from 5 to 30V. An input voltage of 120VAC 60Hz is also accepted if a Parallel Input Converter (Catalog No. 2706-NG1 or NG2) is installed. Almost all programmable controller output modules have some leakage current in the off state. The parallel inputs on the DL20 are designed to ignore this output leakage current.
Chapter 7 The Parallel Port Event Driven Sampling Event driven sampling uses the edge triggered strobe (ETS) input. Terminal 10 is the ETS - and Terminal 11 is the ETS+ (1.5-15VDC). The DL20 reads data on the parallel port on either the rising edge or falling edge (one or the other - not both) as selected in the special functions menu (Set Up I/O Ports). Data must be present on the parallel data port when the edge occurs. The data must remain stable for at least 2 milliseconds after the edge occurs.
Chapter 7 The Parallel Port Time Driven Sampling Because it does not require an additional ETS rising or falling edge to read DL20 data lines, time-driven sampling is the recommended way of looking at DL20 data lines. When time-driven sampling is selected, the DL20 looks at the data lines periodically. The time interval used by the DL20 is set using the special functions menu described in Chapter 8. Time-Driven Sampling Methods AC and DC sampling can be used.
Chapter 7 The Parallel Port DC Sampling The parallel port is always sampled more than once and all readings must agree. This provides a variable degree of insensitivity to noise on the data lines. For example, assume you are sending the binary data 010 and change it to 100. For a very brief time the data lines may assume the intermediate state of 000 or 110 before settling at 100, the desired number.
Chapter 7 The Parallel Port Transferring Variable Data Variable data is transferred up to eight bits at a time. The high order data bits are strobed over, then the low order data bits are strobed over. Only then is the data queued up. The strobing order is important; high order data bits must be strobed in first.
Chapter 7 The Parallel Port Example Message Trigger with Variable Data Message number 12 contains two variables. PARTS COUNT = ↑ REJECTS = ↑ First, transfer over the parts count, 8 bits at a time. Then transfer over the reject count, 8 bits at a time. Lastly, transfer over the message number, which triggers the message.
Chapter 7 The Parallel Port Reducing Host Output Requirements If messages don’t contain variable data, the number of outputs can be reduced. Since no variable data is transferred, both strobe lines are always zero, or always one. In addition, some data lines (D0 - D9) could be eliminated depending on the highest message number used. Figure 7.3 illustrates this method. Figure 7.
Chapter 7 The Parallel Port You can tie the strobe lines high because message zero is ignored. Keep all data lines at zero, until you want to trigger a message. The last message is only triggered once --no matter how long the data lines stay in their state (DL20 rejects unchanging data). To trigger the same message twice in a row, the message must be triggered, the data lines must return to a zero state, the message can then be retriggered.
Chapter 7 The Parallel Port Reducing Host Output Requirements In these examples where MS0 AND MS1 are not strobed, the data lines change state quickly, or the DL20 could read erroneous data. The DL20 samples the data and strobe lines at the set scan rate. The lines are always resampled at least twice, depending on the debounce time setting, and whether AC or DC sampling is selected. All readings must agree, or the DL20 will continue to sample them until they do.
Chapter A–B 8 Special Functions Chapter Objectives This chapter describes the following special functions: • • • • • • • • • • • • • • • • • • • Send Messages to Printer Load Message to Tape① Load Messages from Tape① Verify Tape Messages① Download Message Data as EPROM File① Show Time and Date Set Time and Date Reset and Self Test Set Serial Port① Set Parallel Port① Debug Clear All Messages① Set Autorun Message① Set Background Message① Set Master Address① Enable Dynamic Chaining① Set Relay for Low Bat
Chapter 8 Special Functions Special Functions Menu Figure 8.1 shows the basic menu structure. Figure 8.
Chapter 8 Special Functions Print Messages Figure 8.2 shows the Print Messages prompts. Figure 8.2 Print Messages Menu # ! $ ! # ! $ ! ! $ # % ! # $# " You need a printer or a terminal to perform this function. You can select to print all or a range of messages. You can also obtain a printout of system attributes. The first two prompts define the range to be printed.
Chapter 8 Special Functions Print Messages The next prompt is: LOG ATTRIBUTES? If you answer Yes, the system attribute settings, such as baud rate, parity, port settings, autorun message, master address, and background message are printed followed by a listing of the messages selected and their attributes. After responding to the LOG ATTRIBUTES? prompt, there is a 15 second delay before printing begins. This allows you to disconnect the terminal and connect the printer.
Chapter 8 Special Functions Tape Operations Figure 8.3 shows the Tape Operations prompts. Figure 8.
Chapter 8 Special Functions Tape Operations Before using the tape special functions, the recorder must be properly connected and set up. Refer to Appendix B for instructions. Note: Make sure that the ECHO ALL TO SLAVE special function is not selected. The first prompt on the Tape Operations menu is: ABORT? Answer Yes to return to EDIT?, otherwise you will see this prompt: USE 1770-SB? Answer Yes if you are using an Allen-Bradley Data Recorder or No if you are using a STR-LINK II or III Data Recorder.
Chapter 8 Special Functions Verifying Tapes Always use the verify after writing a tape or if you question the readability of a tape. Verify performs a checksum on the tape data and compares that checksum with the checksum stored on the tape. If the checksums don’t match, the tape fails verification. The data does not have to match the data stored in the DL20. The DL20 displays the results of the operation.
Chapter 8 Special Functions EPROM Programming Figure 8.4 shows the Burn EPROM prompts. Figure 8.4 EPROM Operations Menu The DL20 can transfer message data and system attributes to an EPROM file. The EPROM file can be used to burn an EPROM. When this EPROM is inserted into a DL20, message and system attributes cannot be modified.
Chapter 8 Special Functions Real Time Clock Functions Figure 8.5 shows the Clock Operation prompts. Figure 8.5 Clock Operations Menu BURN PROM? N CLOCK OPERATION? N RESET UNIT? Y SHOW TIME? N EDIT? N Y Shows Time Press [Esc] SET CLK? Year / Month / Day / Date / 12 or 24 Hr Format / Hour / AM or PM / Minute / Second Press [Esc] Use the real time clock to time stamp message logs or to display the current time. The Clock Operation special function sets the correct time and date.
Chapter 8 Special Functions Real Time Clock Functions For example, to set the clock to 1:34 pm you would answer Yes to the SET CLK? prompt. You are prompted to enter a year. YR:93 Enter the correct year and press [Return]. You are prompted for a month. MONTH:2 Enter the correct month and press [Return]. You are prompted for a day of the week. DAY:4 Enter a value 1 through 7 where 1 = Sunday and 7 = Saturday and press [Return].
Chapter 8 Special Functions Reset Unit Function The Reset Unit special function has the same effect as turning the power off and then back on. After resetting, the DL20 goes through its normal powerup self test sequence. The reset function provides a convenient method of making a baud rate change take effect. Figure 8.6 illustrates the reset menu. Figure 8.
Chapter 8 Special Functions Setting Up I/O Port Functions Figure 8.7 shows the Set Up I/O Ports prompts. Use the Set Up I/O Ports function to configure the parallel or serial port. Figure 8.
Chapter 8 Special Functions Setting Serial Port After selecting Set Serial Port, you are prompted for the number of nulls. HOW MANY NULLS: 4 Nulls are do nothing characters sent to the printer or other serial devices after a carriage return. Slower terminals might require nulls because the carriage takes some time to return to the first print column. Enter 0 or another value and press [Return]. You are prompted for the carriage width of your printer.
Chapter 8 Special Functions Setting Up I/O Port Functions Setting Serial Port After setting parity, you are prompted for the RS-422 port. USE 422 IN? N The DL20 RS-422 port can transmit and receive data from other DL20 devices used as addressable masters or slave DL10 / DL50 displays. • • If you want to use the port as an output, answer No. All data output at the RS-232 port will also be transmitted at the RS-422 port. Set the port to output if slave displays or addressable masters are being used.
Chapter 8 Special Functions Setting Parallel Port Data Formats The parallel port can be configured to accept either binary or BCD data for either message triggers or variable data. This allows you to input variables in a BCD format and triggers in a binary format (allows full 1022 message capability). Important: Binary data must be selected if the serial port is being used for message triggers.
Chapter 8 Special Functions Setting Up I/O Port Functions Setting Parallel Port If you selected time driven sampling, you are prompted for the type of inputs used. USE NG1/2 SER A,B? Answer [Y] for AC sampling if you are using: • A 2706-NG1 or -NG2 Series A or B Parallel Input Converter Answer [N] for DC sampling if you are using: • • DC inputs Catalog No. 2706-NG1 or -NG2 Series C or later Parallel Input Converter When specifying time driven samples, you must provide a scan rate.
Chapter 8 Special Functions Parallel Port Default Values Table 8.B lists the default values for the parallel port. Table 8.
Chapter 8 Special Functions Debug Mode Use the debug mode to check the status of the parallel port inputs. The debug mode checks the parallel port and displays the status of each line. The debug mode uses the parallel port sampling method specified in the Set Parallel Port function. Remember that if edge triggered strobe is selected, the ETS inputs must be toggled.
Chapter 8 Special Functions Set Up Master Figure 8.8 shows the Set Up Master prompts. Figure 8.
Chapter 8 Special Functions Use the Set Up Master function to: • • • • • • • Select autorun message Select background message Set master address Enable or disable dynamic chaining Set relay to turn on when batteries are low Output all prompts and messages to slave displays Display error messages Selecting an Autorun Message Autorun causes the run mode to be entered on powerup if the DL20 was shut off in the run mode or if a message EPROM is installed.
Chapter 8 Special Functions Selecting a Master Address The addressable master option allows you to connect up to 32 DL20s on a single RS-422 network (up to 100 with inline repeaters). You can trigger messages at one or all of the DL20s by sending a master address with the message number. Refer to Chapter 5 for a description of addressable master protocol.
Chapter 8 Special Functions Enable Dynamic Chaining The prompt for DYNAMIC CHAINING looks like this: DYNAMIC CHAINING? N When dynamic chaining is enabled and the DL20 powers up in the run mode, the DL20 can be controlled using special messages #2, #8, and #9. Up to 20 messages may be repeatedly displayed. Chapter 5 provides a description of how to use dynamic chaining.
Chapter 8 Special Functions Displaying Prompts on All Slaves The prompt for selecting the echo function looks like this: ECHO ALL TO SLAVE? Answering Yes to this prompt allows you to view menu edit and special function prompts on all slave DL10 displays. ! ATTENTION: Do not use the ECHO ALL TO SLAVES special function when sending messages to a printer, tape recorder or computer.
Chapter A–B 9 Installation and Maintenance Chapter Objectives This chapter describes: • • • How to install the DL20 How to connect external devices Replacement fuses Installation Dimensions Panel cutout dimensions to install a display are shown in Appendix D. Overall dimensions, optional flush mount dimensions and enclosure dimensions are also shown in Appendix D. DL20 Installation Use these steps to mount a DL20 in a custom panel, enclosure, or optional Bulletin 2706 enclosures (Cat. No.
Chapter 9 Installation and Maintenance Wiring Procedures Refer to Figure 9.1 for wiring terminal descriptions. The procedures described below and the wiring terminal diagram guides you through the wiring process. 1. Connect an 85-264 VAC, 47-63 Hz input voltage source to terminals 26, 27, and 28 of the DL20. The voltage source must have 15 amp (max) short circuit protection. ! ATTENTION: Terminal 28 (E.
Chapter 9 Installation and Maintenance DL20 Wiring Terminals Figure 9.1 DL20 Connection Terminals RELAY SERIAL COMM PORT RELAY SERIAL COMM PORT RS RS 422 422 N.C. COM N.O. + KY BD 1 2 PARALLEL INPUT PORT MS0 MS1 3 4 5 GND PARALLEL INPUT PORT AC PWR AC PWR +12 RS RS VDC ETS ETS 232 232 OUT IN GND OUT + D9 D8 D7 D6 D5 D4 D3 D2 +5 E.
Chapter 9 Installation and Maintenance PARALLEL INPUT PORT (Terminals 10 thru 23). The parallel input port accepts both commands and variable data. Refer to Chapter 6 for more information. MS1 MS0 (Terminals 20 and 21). These lines indicate whether the data on the input lines is a message number or variable data. ETS (Terminals 10 and 11). The DL20 can be interfaced to multiplexed word output modules via this input.
Chapter 9 Installation and Maintenance Connecting RS-232 Devices When connecting RS-232 devices refer to the following diagrams. Note: The shield is connected to common at one end only. It is recommended not to use the shield as a conductor; if necessary, use a separate wire. Some devices may require certain hardware handshaking lines to be asserted. Refer to appropriate documentation. Connecting IBM XT or Compatible Figure 9.2 shows how to connect an IBM XT or compatible computer. Figure 9.
Chapter 9 Installation and Maintenance Connecting RS-232 Devices Connecting 1775-GA Peripheral Communications Module Figure 9.4 shows how to connect an Allen-Bradley Peripheral Communications Module (Catalog No. 1775-GA). Figure 9.
Chapter 9 Installation and Maintenance Connecting a Data Recorder Refer to Appendix B for instructions on how to connect and use a data recorder. Connecting a Programming Terminal The optional keyboards (Catalog No. 2706-NK1, -NK2) connect directly to the telephone-type connector (labeled KYBD) on the rear of the DL20. Power should not be applied to the display when connecting or disconnecting the 2706-NK1 or -NK2 keyboards.
Chapter 9 Installation and Maintenance Figure 9.7 Cable Diagram (Catalog No. 2706-NC1) 1 DL20 Display RS 232 IN 7 2 TD RS 232 OUT 6 3 RD GND 8 7 SG 18 25 DL20 Display to Allen-Bradley Industrial Terminal (T1 thru T4) (Catalog No. 2706-NC1) DEC VT Terminals To connect a DEC VT Series Terminal to the DL20 use a Catalog No. 2706-NC2 programming cable connected as shown in Figure 9.8. Figure 9.
Chapter 9 Installation and Maintenance Connecting RS-422 Devices Data at the RS-422 port is interpreted identically to data input on the RS-232 port. The chief advantage of using the RS-422 port is that it has better output characteristics and transmits data in a way that is inherently more noise-immune than RS-232. This enables RS-422 links to be up to 4000 feet long (3/4 miles). Use the RS-422 to connect one or more DL20s to a host controller or to one or more DL10 slave displays.
Chapter 9 Installation and Maintenance Connecting Addressable DL20 Masters Connect up to 32 individually addressable DL20s to an RS-422 port of a PLC or computer. The connection is made using a 100% shielded twisted pair cable with drain wire. All DL20s must have their RS-422 port set for input, and their baud rates set identically. Using in-line amplifiers, up to 100 addressable masters can be placed on one RS-422 network up to 4,000 feet (1219 meters) in length. Figure 9.
Chapter 9 Installation and Maintenance Connecting 1771-DB BASIC Module to a Single DL20 Figure 9.11 shows how to connect an Allen-Bradley BASIC Module (Catalog No. 1771-DB) to a single DL20. Figure 9.11 Connecting a DL20 to Allen-Bradley 1771-DB Basic Module 1771-DB RS-422 Peripheral Port Note: Other host controllers may use different pin numbers than shown for the 1771-DB.
Chapter 9 Installation and Maintenance Replacing Fuses If it is necessary to replace the internal fuse of the DL20, first remove power to the display. Remove the fuse. Replacement fuses are listed below: 1.25A, 250 Volt AC, Type MDL 1.
Chapter A–B 10 Specifications Display Character Height 1 Line Display . . . . . . . . . . . . . . . . . . . . . 0.59 inches (15.1 mm) 2 Line Display: . . . . . . . . . . . . . . . . . . . . . 0.44 inches (11.3 mm) 4 Line Display . . . . . . . . . . . . . . . . . . . . . 0.49 inches (12.5 mm) Character Set: . . . . . . . . . . . . . . Uppercase, lowercase, and symbols Characters per Line: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Character Type: . . . . . . . . . . . . . . .
Chapter 10 Specifications Environmental 10–2 Operating Temperature: . . . . . . . . . . . . . . . . 32 to 140 F (0 to 60 C) Storage Temperature: . . . . . . . . . . . . . . . -40 to 185 F (-40 to 85 C) Humidity Rating: . . . . . . . . . . . . . . . . . . . 5 to 95% (no condensation) NEMA Rating: . . . . . . . . . . . . UL Listed for Type 12/13 and designed but not UL Listed for Type 4 Shipping Weights 1 Line Display . . . . . . . . . . . . . . . . . . . . . . . 9.5 pounds (4.32 kg) 2 Line Display . . . .
Appendix A–B A ASCII Character Set \ DEL A–1
Appendix A–B B Tape Recorder Setup Overview This appendix describes how to upload and download messages using a data recorder in various configurations including: • • • • • Allen-Bradley Data Recorder (Catalog No. 1770-SB) with keyboard (Catalog No. 2706-NK1 or -NK2) Allen-Bradley Data Recorder (Catalog No. 1770-SB) with Allen-Bradley Industrial Terminal Allen-Bradley Data Recorder (Catalog No. 1770-SA) with keyboard (Catalog No. 2706-NK1 or -NK2) Allen-Bradley Data Recorder (Catalog No.
Appendix B Tape Recorder Setup 1770-SB Data Recorder Using a Keyboard Refer to Figure B.1 when using a 1770-SB Data Recorder with optional keyboard (Catalog No. 2706-NK1 or -NK2). Figure B.1 Data Recorder (Catalog No. 1770-SB) with Keyboard (2706-NK1 or -NK2) 1770-SB RECORDER DL20 DISPLAY 6 7 8 RS RS GND 232 232 OUT IN Cable (Catalog No. 2706-NC4) 1. Connect the 2706-NC4 cable to terminals 6,7 and 8 of the DL20 as shown. DO NOT plug the cable into the 1770-SB at this time.
Appendix B Tape Recorder Setup 5. Select desired function: WRITE TO TAPE, READ FROM TAPE or VERIFY TAPE. 6. Follow the instructions provided by the DL20. The following is an example of WRITE TO TAPE. DL20 Prompt Action Required WRITE TO TAPE? Type [Y] [Return] on the keyboard. HIT STOP/REWIND Press Stop/Rewind on the data recorder and wait for the tape to rewind. PLUG IN 1770-SB Plug the cable (Catalog No. 2706-NC4) into the CONTROLLER EQUIPMENT port on the data recorder.
Appendix B Tape Recorder Setup 1770-SB Data Recorder Using an Industrial Terminal Refer to Figure B.2 when using a 1770-SB Data Recorder with an Allen-Bradley Industrial Terminal or other dumb terminal. Figure B.2 Data Recorder (Catalog No. 1770-SB) with Industrial Terminal ALLEN-BRADLEY INDUSTRIAL TERMINAL 1770-T1 THRU T4 PORT B 1770-SB RECORDER 2706-NC1 DL20 DISPLAY 6 7 8 RS RS GND 232 232 OUT IN ! 2706-NC4 ATTENTION: Do not plug in the data recorder end of the cable (Catalog No.
Appendix B Tape Recorder Setup 5. Select the desired function: WRITE TO TAPE, READ FROM TAPE or VERIFY TAPE. 6. Follow the instructions given by the DL20. The following is an example of WRITE TO TAPE. DL20 Prompt WRITE TO TAPE? Action Required Type [Y] [Return] on the terminal. UNPLUG TERMINAL Unplug the cable (2706-NC1) from the Industrial Terminal. HIT STOP/REWIND Press Stop/Rewind on the data recorder and wait for the tape to rewind. PLUG IN 1770-SB Plug the cable (Catalog No.
Appendix B Tape Recorder Setup 1770-SA Data Recorder Using a Keyboard Refer to Figure B.3 when using a 1770-SA Data Recorder with optional keyboards (Catalog No. 2706-NK1 or -NK2). Figure B.3 Data Recorder (Catalog No. 1770-SA) with Keyboard (2706-NK1 or -NK2) 1770-SA RECORDER DL20 DISPLAY 6 7 8 RS RS GND 232 232 OUT IN 2706-NC4 1. Connect the 2706-NC4 cable to terminals 6, 7 and 8 of the DL20 as shown. DO NOT connect to the 1770-SA at this time.
Appendix B Tape Recorder Setup The following is an example of WRITE TO TAPE. DL20 Prompt Action Required WRITE TO TAPE? Type [Y] [Return] on the keyboard. HIT STOP/REWIND Press Stop/Rewind on the data recorder and wait for the tape to rewind. PLUG IN 1770-SB Plug the cable (Catalog No. 2706-NC4) into the OTHER PRODUCTS port on the data recorder. PRESS RECORD ON TAPE Press Record on Tape button on the data recorder. PUT TOGGLE ON RECORD Put toggle switch on cable (Catalog No.
Appendix B Tape Recorder Setup 1770-SA Data Recorder Using an Industrial Terminal Refer to Figure B.4 when using a 1770-SA Data Recorder with an Allen-Bradley Industrial Terminal or other dumb terminal. Figure B.4 Data Recorder (Catalog No. 1770-SA) with Industrial Terminal ALLEN-BRADLEY INDUSTRIAL TERMINAL 1770-T1 THRU T4 PORT B 1770-SA RECORDER 2706-NC1 DL20 DISPLAY 6 7 8 RS RS GND 232 232 OUT IN ! 2706-NC4 ATTENTION: Do not plug in the data recorder end of the cable (Catalog No.
Appendix B Tape Recorder Setup The following is an example of WRITE TO TAPE. DL20 Prompt WRITE TO TAPE? Action Required Type [Y] [Return] on the terminal. UNPLUG TERMINAL Unplug the cable (2706-NC1) from the Industrial Terminal. HIT STOP/REWIND Press Stop/Rewind on the data recorder and wait for the tape to rewind. PLUG IN 1770-SB Plug the cable (Catalog No. 2706-NC4) into the OTHER PRODUCTS port on the data recorder. PRESS RECORD ON TAPE Press Record on Tape button on the data recorder.
Appendix B Tape Recorder Setup EPI STR-LINK Data Recorders The EPI STR-LINK Recorders can be used as as storage device for DL20 messages. There are DIP switches inside the STR-LINK II and III which configure its operation. Refer to the user manual for the data recorder to access DIP switches.
Appendix B Tape Recorder Setup DL20 Configuration Make sure that the DL20 is set for: Baud Rate = Parity = 1200 None Connecting EPI STR-LINK Recorders Figure B.5 illustrates the connections. Connect the STR-LINK Recorder (DATA SET INTERFACE connector) to the DL20 RS-232 port using the Tape Loader Cable (Catalog No. 2706-NC3) as shown. If you are using a keyboard (Catalog No. 2706-NK1 or -NK2), plug the keyboard into the rear of the DL20. No other connections are required.
Appendix A–B C Creating EPROM Files Overview This section describes how to transfer an application to a personal computer in an EPROM file format. Refer to Chapter 8, Special Functions, for the BURN PROM menu description. File Transfer Programs The BURN PROM function converts the application to a Motorola hex file format that can be used to burn an EPROM. The file is transferred to a host Personal Computer (PC). Once stored in the PC, the file can be downloaded to an EPROM Programmer.
Appendix C Creating EPROM FIles 4. Set your PC to receive the file by running the program TERMINAL.exe. 5.
Appendix C Creating EPROM Files 6. In the TERMINAL Window, select Settings "Communications and enter the following parameters: Baud Rate, Parity, and Data Bits to match DL20 Stop Bit = 1 Flow Control = Xon/Xoff No Parity Check and No Carrier Detect Selected Connector = port connected to DL20 Note: If possible, set the PC communications for COM2, allocating COM1 for the mouse. 7.
Appendix C Creating EPROM FIles Inserting the EPROM To insert a programmed EPROM into the DL20: ! ! ATTENTION: Disconnect all power from the DL20 before removing the cover. Failure to do so may result in electrical shock or damage to the DL20. ATTENTION: Make sure you are properly grounded to prevent damage from Electrostatic Discharge (ESD). An ESD grounding strap is recommended. Failure to do so may result in damage to the DL20 circuit board.
Appendix A–B D Dimensions Overview This appendix provides the approximate dimensions for DL20s. Panel Cutout Dimensions Figure D.1 provides the dimensions for the panel cut out. Figure D.1 Panel Cut Out Dimensions One and Two Line DL20 Displays 0.19 (4.8 mm) 13.87 (352.3 mm) 6.94 (176.1mm) 3.50 (88.9 mm) Cut Out 0.13 (3.1 mm) 0.25 (6.4 mm) DIA. HOLE (6 PLACES) NOTE: HOLES MAY BE DRILLED SMALLER AND TAPPED FOR NO. 10 HARDWARE. 3.88 (98.4 mm) 13.62 (345.9 mm) Cut Out Four Line DL20 Display 0.
Appendix D Dimensions Overall Dimensions Figure D.2 provides the overall dimensions of the one and two line DL20. Figure D.2 One and Two Line DL20 Dimensions Dimensions Inches (Millimeters) 0.12 TYP. (3.2 mm) 0.72 (18.3 mm) 13.30 (337.8 mm) 6.65 (168.9 mm) Top View Six Mounting Studs 14.37 (365.0 mm) Display Type Dimension A Dimension B One Line 1.25 inches (31.8 mm) 1.70 inches (43.2 mm) 10.12 inches (257.2 mm) 8.81 inches (223.8 mm) Two Line DIM. ‘‘B’’ SEE CHART DIM. ”A’’ SEE CHART 4.
Appendix D Dimensions Figure D.3 provides the overall dimensions of the four line DL20. Figure D.3 Four Line DL20 Dimensions Dimensions Inches (Millimeters) 0.53 (13.5 mm) 0.12 Typ. (3.0 mm) 13.30 (337.8 mm) 0.72 (18.3 mm) Top View 6.65 (168.9 mm) Six Mounting Studs 14.37 (365.0 mm) 8.83 (224.3 mm) 1.63 (41.4 mm) 2.94 (74.7 mm) 0.099 (2.5 mm) (PANEL THICKNESS) 6.18 (157.0 mm) Front View 7.37 (187.2 mm) 0.53 (13.5 mm) 0.125 (3.2 mm) (GASKET THICKNESS) Side View 5.12 (130.0 mm) 0.53 (13.
Appendix D Dimensions Flush Mount Panel Cutout Dimensions Figure D.4 provides the dimensions of the optional flush mount displays. Figure D.4 Flush Mount Panel Cut Out Dimensions Dimensions Inches (Millimeters) 12.42 (315.5 mm) 11.70 (297.2 mm) One Line Flush Mount Display 10.12 (257.2 mm) Cut Out 1.15 (29.2 mm) 0.13 (3.3 mm) 1.25 (31.8 mm) Cut Out 1.62 (41.2 mm) 1.89 (48.0 mm) 0.281 DIA. (7.1 mm) (FOR LED LENS) 0.187 DIA. (4.7 mm) 4 Holes 12.42 (315.5 mm) 11.70 (297.2 mm) 1.80 (45.
Appendix D Dimensions Parallel Input Converter Dimensions Figure D.5 provides the dimensions of the panel mounted Parallel Input Converter. Figure D.6 shows the dimensions of the display mounted Parallel Input Converter. ! ATTENTION: Parallel Input Converters (Catalog No. 2706–NG1, –NG2) cannot accept 220/240VAC. If 220/240VAC is applied to the Parallel Input Converter, damage to the input converter will occur. Figure D.5 Panel Mounted Converter (Catalog No. 2706-NG2) Dimensions 7.88 (200.2) 6.
Appendix D Dimensions Figure D.6 Display Mounted Converter (Catalog No. 2706-NG1) Dimensions 6.76 (171.5) 7.88 (200.2) 1.37 (34.0) DL20 0.46 (11.7) 3.56 (90.4) Side 2.43 (61.7) 1.25 (31.
Appendix D Dimensions Enclosure Dimensions Figure D.7 provides the dimensions of the optional enclosure. Figure D.7 Enclosure Dimensions Dimensions Inches (Millimeters) A B C D 2706–NE1 3.87 (98.3) 3.44 (87.4) 6.31 (160.3) 5.96 (151.4) 2706–NE2 5.68 (144.3) 5.25 (133.4) 8.11 (206) 7.77 (197.4) 16.19 (411.2) 1.29 (32.8) 13.61 (345.7) 1.43 (36.3) Cut Out 1.05 (26.7) C D B Front View A 1.29 (32.8) Cut Out 6–.25 Dia. Holes (6.4) 13.87 (352.3) 15.88 (403.4) 8.20 (208.3) 0.50 (12.
Appendix A–B E Setting Keyboard Baud Rate Overview This appendix provides instructions for setting the baud rate on keyboards (Catalog No. 2706-NK1 or -NK2). Setting Baud Rate Before the 2706-NK1 or 2706-NK2 keyboards can be connected to the DL20, the baud rate of the keyboard must match the display baud rate. Displays are shipped from the factory with a baud rate of 9600. The keyboard baud rate must be set to 9600 to work with a DL20.
Appendix A–B F Message Display Worksheets One Line Worksheet MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 F–1
Appendix F Message Display Worksheets Two Line Worksheet MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER 1 F–2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Appendix F Message Display Worksheets Four Line Worksheet MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER MESSAGE NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 F–3
Appendix A–B G Application Notes Overview This appendix provides examples of interfacing a DL20 with PLC-2 and PLC-5 Programmable Controllers through the DL20 parallel port. Programming examples and connection diagrams show how to transfer message triggers and variable data from 1771 I/O modules to the DL20 parallel port. The examples and diagrams used in this appendix are included solely for illustrative purposes.
Appendix G Application Notes PLC-2 Programming Examples Triggering Simple Messages (PLC-2) Figure G.1 illustrates how individual inputs can trigger corresponding messages. Figure G.
Appendix G Application Notes Rung Descriptions (Figure G.1) Rung 1 Triggers special message #1 to clear the display if no other messages are being triggered in a later rung. A constant 1 is stored in address 057. Rung 2 Triggers message 20 if input 112:00 is true and if rungs 3 and 4 are not true. Rung 3 Triggers message 21 if input 112:01 is true and if rung 4 is not true. Rung 4 Triggers message 22 if input 112:02 is true. The ladder diagram (Figure G.1) provides a priority type operation.
Appendix G Application Notes PLC-2 Programming Examples Triggering Messages with Variable Data (PLC-2) This example illustrates how a message with a variable data value from a PLC-2 Programmable Controller can be displayed on a DL20. There are 10 data lines (D0-D9) and 2 strobe lines (MS0 and MS1) on the DL20. If both MS0 and MS1 are high, it indicates to the DL20 that the value present on the data lines D0-D9 is a message number to be triggered. At this point all 10 data lines (D0-D9) are examined.
Appendix G Application Notes Table G.
Appendix G Application Notes PLC-2 Programming Examples Figure G.2 shows the example ladder program for transferring variable data with a PLC-2. Figure G.2 PLC-2 Ladder Program (Messages with Variable Data) 031 15 111 SEQUENCER OUTPUT COUNTER ADDR: 030 CURRENT STEP: 008 SEQ LENGTH: 008 WORDS PER STEP: 1 FILE: 037-046 MASK: 035-035 OUTPUT WORDS 1: 010 2: 3: 4: 031 030 EN Rung 1 17 030 DN 15 031 TON 14 15 030 Rung 2 .
Appendix G Application Notes Figure G.2 PLC-2 Ladder Program (Messages with Variable Data) Continued 032 043 Rung 11 06 032 06 043 Rung 12 07 032 07 041 Rung 13 10 032 00 041 Rung 14 11 032 01 041 Rung 15 12 032 02 041 Rung 16 13 03 ZCL Rung 17 Rung Descriptions (Figure G.2) Rung 1 Each time TON 031 is done, the sequencer instruction outputs the next step. These steps were described previously. The sequencer done bit is set when the sequencer reaches its last step.
Appendix G Application Notes PLC-2 Programming Examples Rung 2 This is the rung that actually triggers the message. Setting input address 111:14 momentarily will initiate one complete sequence, displaying the message with variable data. If the application requires the variables to be continuously updated on the display, then, address 111:14 should be set high continuously for that period of time. Timer 031 determines the time between step changes.
Appendix G Application Notes PLC-5 Programming Examples The PLC-5 processor configuration used for both examples is listed below. This configuration may vary for different applications. 1. An Allen-Bradley 1784-T45 Industrial Computer is used. 2. The Data Monitor command is used to configure the sequencer table. 3. Two output modules in Rack 0, module group 0 (O:000). 4.
Appendix G Application Notes PLC-5 Programming Examples When no inputs are true, the display clears since the 1st rung shown always triggers special message #1. If your application requires that the last message remains displayed indefinitely, do not program the first rung. The DL20 Auto Clear message feature must be disabled for this type of operation. In this example, one rung is required for each unique message to be triggered.
Appendix G Application Notes Triggering Messages with Variable Data This program example illustrates how a message with a variable data value from a PLC-5 Programmable Controller can be displayed on a DL20. There are 10 data lines (D0-D9) and 2 strobe lines MS0 and MS1 on the DL20. If both MS0 and MS1 are high, it indicates to the DL20 that the value present on the data lines D0-D9 is a message number to be triggered. At this point, all 10 data lines (D0-D9) are examined.
Appendix G Application Notes PLC-5 Programming Examples PLC 5 Binary Radix Data Table N7 Integer File Address MSB 15 0 LSB Table G.B PLC-5 Sequencer Outputs SQO Step# Bit 9 DL20 MS1 Bit 8 DL20 MS0 DL20 Data Lines① D7 ..... D0 Decoded Data Comments N7:0 0000 0000 0000 0000 0 0 0 0000 0000 0 Initial output step for SQO. N7:1 0000 0011 0000 1010 1 1 1 0000 1010 10 Special Msg #10 clears DL20 queue. N7:2 0000 0010 0000 0001 2 1 0 0000 0001 1 High Byte for variable data = 256.
Appendix G Application Notes Figure G.4 PLC-5 Ladder Program (Messages with Variable Data) T4:0 Rung 2:0 DN T4:0 Rung 2:1 DN T4:1 Rung 2:2 DN Rung 2:3 SQO SEQUENCER OUTPUT File #N7:0 Mask 03FF Dest O:002 Control R6:0 Length 4 Position 0 TON TIMER ON DELAY Timer T4:0 Time Base 0.01 Preset 3 Accum 1 TON TIMER ON DELAY Timer T4:1 Time Base 1.0 Preset 1250 Accum 287 Rung 2:5 (EN) (DN) (EN) (DN) N7:9 31 BTD BIT FIELD DISTRIB Source T4:1.
Appendix G Application Notes PLC-5 Programming Examples Rung Descriptions (Figure G.4) Rung 2:0 Each time input T4:0/dn is true, the sequencer output instruction outputs the next step. The sequencer done bit is set when the sequencer reaches rung 2:4. The sequencer then resets itself and begins again. Rung 2:1 Timer T4:0 is a free running timer which drives the SQO. A preset value of 3 provides a pulse every 30 msec.
Appendix G Application Notes DL20 Parallel Port Configuration The following parameters are configured within the SET PARALLEL PORT menu of the DL20. HI TRUE LOGIC? (Y for PLC-2/PLC-5 example) Selecting Y (yes) means that the DL20 is expecting the parallel inputs to be high (ON) when a logic 1 is represented. Selecting N (no) means that the DL20 is expecting the parallel inputs to be low (OFF) when a logic 1 is represented.
Appendix G Application Notes DL20 Parallel Port Configuration SCAN RATE: (4 for PLC-2/PLC-5 example) If TIME DRIVEN mode was selected previously, then the value entered represents the period between samplings of the parallel port. The value entered is in units of 1.95 milliseconds. Example: 28 = 28 x 1.95 = 54.6 milliseconds between samplings. Important: You must be sure that data (each step) is present on the parallel port for at least the scan rate. If a Parallel Input Converter (Catalog No.
Appendix G Application Notes Parallel Interface Connections The following connections are applicable to the program examples shown previously. The standard voltage levels required for the DL20 parallel port are 5 to 30 VDC. When using DC Output Modules, an external power supply of the appropriate voltage level and current capacity is required. AC Output Modules can be used, however, these applications require one of the Parallel Input Converters as described below.
Appendix G Application Notes Figure G.
Appendix G Application Notes Figure G.6 DL20 to DC Output Module (Catalog No. 1771-OB, -OG) D9 D8 D7 D6 D5 D4 D3 D2 +5 VDC D1 DO MS1 MS0 OUT GND + 12-24 VDC (OB) or + 5 VDC (OG) - DL20 Terminals 00-07 10-17 A A 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 1771-OB DC Output Modules (12-24 VDC) or 1771-OG DC Output Modules (5VDC) Set both internal switches in the OG module ON for high true logic.
Appendix G Application Notes Figure G.7 DL20 to High Density DC Output Module (Catalog No. 1771-OBD) D9 D8 D7 D6 D5 D4 D3 D2 +5 VDC D1 DO MS1 MS0 OUT GND +24 VDC DL20 Terminals 00 00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17 E High Density Output Module (Catalog No. 1771-OBD) ! G–20 ATTENTION: Do not connect to terminal 22 (+5 VDC OUT). Applying any voltage to this terminal will damage the DL20.
Appendix A–B H 120 VAC Parallel Input Converters Description The 110/120V AC Parallel Input Converters connect to the parallel port of a DL20 one, two, or four line display. Input converters allow AC connections to the DL20 parallel port which normally accepts DC voltages from 5–30 volts.
Appendix H Parallel Input Converters Description Figures H.1 and H.2 provide block diagrams of the converter circuits. Figure H.1 Series A and B Parallel Input Converter Block Diagram Converter Circuit 120 VAC Input to DL20 D0 Common VDC AC Input On AC Input Off 5 Common D0 0 Time Figure H.
Appendix H Parallel Input Converter PLC Output / DL20 Input Signals You will need to configure the parallel port to communicate with the input converter and determine the timing for data transfers between the DL20 and the converter. Use the instructions below to set up the DL20 parallel port for operation with Series A, B, C or later Parallel Input Converters. 1. Select the AC input mode of the parallel port when programming the DL20.
Appendix H Parallel Input Converters 4. To insure that the DL20 message or variable queue does not overflow resulting in lost messages/variables, determine the minimum time between message (MTBM) triggers (see Table H.A). The MTBM is critical for applications where variables are being updated fast. Minimum Time Between Messages (MTBM) values listed below are based on a scan rate of 28. Table H.
Appendix H Parallel Input Converter Panel Mounted Version (Catalog No. 2706–NG2) 1. Secure the converter to the panel. 2. Connect the input converter to the DL20 by wiring terminals 11A through 22 of the 2706–NG2 to the identically numbered terminals on the DL20. Connecting the AC Inputs 1. Connect up to twelve 120V AC 10%, 60 Hz inputs to the 120V AC source inputs (D9 through D0, MS1 and MS0) on the parallel input converter. 2. Connect the AC common to the terminal marked AC COM on the converter.
Index A–B Dataliner Message Display DL20 Series A C 54154 0&5-' #$-'3 07'2 '2.+/#-3 #22+#)' '452/ '9 #.1-+/) *#+/+/) 9/#.+% 9/#.+% 8#.1-' #.
Index Dataliner Message Display DL20 Series Communications, Setting Ports, 8-12 Communications Options, 2-5 Connector, Keyboard, 9-3 Connectors, Serial Port, 6-1 Control Codes, Slave Mode, 6-7 Conventions, 1-2 Disable HE Stack, 5-12 Cursor, Control, 4-12 Display Clearing, 5-6 Specifications, 10-1 Vacuum Fluorescent, 2-1 D DL10 Manual, 1-2 Conversion Table, ASCII, A-1 Converter, Parallel Input, 2-3, H-1 D0 - D9 Terminals, 9-4 Data Format, Serial Port, 6-2 Parallel Port, 8-15 Data Hold Time, 7-10, 7-1
Index Dataliner Message Display DL20 Series 3,05,0* 512 3,05,0* 0&.1463( ,/(04,104 05(3 (: 05(3,0* 60 1'( 07,310/(05 2(&,),&$5,104 1.' ,/( $5$ I ..(*$. (44$*( 3,**(3 2(3$5,10 04(35,0* 31*3$//,0* 3$04)(33,0* ,.(4 /%('',0* ,/( $0' $5( 31*3$//,0* 0),0,5( +$,04 3$4,0* (44$*(4 0,5,$. 5$3562 33134 .
Index Dataliner Message Display DL20 Series Special- Set Clock Interactively, 5-10 Special- Set Clock with Variables, 5-11 Special- Stop Printing HE Stack, 5-8 Special- Test Battery, 5-7 Storing, 4-1 Taping, 8-5, 8-6 Trigger Example, 7-13 Trigger Queue, 5-3 Wait Time, 4-5 Worksheets, F-1 Set Up Menu, 8-19 Setup, 8-19 Master Address, 3-4 Illegal Adresses, 8-21 Setting, 8-21 Memory Backup, 2-1 Estimating Usage, 4-22 Size, 2-1, 3-3 Menu Clock, 8-9 Edit Mode, 4-2 EPROM, 8-8 Main, 3-6 Print Messages, 8-3 Reset
Index Dataliner Message Display DL20 Series P $4$..(. $6$ ,0(5 $4$..(. 0276 108(46(4 .1&- ,$*4$/ 100(&6,0* 02765 100(&6,105 ,/(05,105 056$..$6,10 $4$..(. 146 76276 10),*74$6,10 76276 10),*74$6,10 76276 10),*74$6,10 $6$ ,0( "$.7(5 ,0$4; $6$ ,0( "$.7(5 ,0$4; 85 0276 $6$ 14/$65 $6$ $/2.,0* ()$7.6 "$.7(5 (5&4,26,10 :$/2.( 0276 108(46(45 1*,& (8(.
Index Dataliner Message Display DL20 Series 024 0//'%4+/) &&2'33#$-' #34'23 0//'%4+/) 0&5-' 0//'%4+/) -#6'3 5/ 0&' /4'2+/) 8+4+/) #-4+/) '35.+/) S %#/ #4' %20-- 0&' '-( '34 '2+#- 024 0//'%4+/) /&5342+# '2.+/#-3 0//'%4+/) 0&5-' 0//'%4+/) #4# '%02&'23 0//'%4+/) '2.+/#-3 0//'%4+/) 0&5-' 0//'%4+/) 02 0.1#4+$-' 0//'%4+/) " 02 0.
Index Dataliner Message Display DL20 Series Methods, 7-10 Serial Port, 10-1 Stobe Commands HDAT, 7-5 LDAT, 7-5 NULL, 7-5 Stopping HE Printout, 5-8 Storing Messages, 2-2 Strobe Edge Triggered, 7-7 Mnemonics, 8-18 Strobe Lines, 7-5 T Tape Recorder, Set Up, B-1, B-2, B-4, B-6, B-8 Transferring Data, 5-5 Transferring Variable Data, 7-12 Triggers and Queues, 5-3 U Unchanged Data Rejection, 7-7 Unloading and Loading Queues, 5-3 Upper Case Lock-Unlock, 4-18 V Vacuum Fluorescent Display, 2-1 Variable Clock Se
DL20 EDIT COMMANDS Function Keys Pressed (Simultaneously) Forward One Space Ctrl [L] Back One Space Ctrl [H] Up a Line (Move 20 characters to left within message) Ctrl [K] Down a Line (Move 20 characters to right within message) Ctrl [J] Delete a Character Ctrl [D] Change or Review Message Attributes Ctrl [A] Run Message Ctrl [R] Erase Message Ctrl [E] Toggle Uppercase Lock Ctrl [U] Show Free Memory Ctrl [F] Imbed Non-Decimal Point Variable Ctrl [V] Imbed Formatted Decimal Point Vari
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