ALLEN-BRADLEY Bulletin 2755 Hand-Held Scanner with RS-232 Option (Catalog No.
Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment. “Application Guidelines for 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 Hand-Held Scanner with RS-232 Option A–B Using this Manual Chapter 1 Overview of Scanner Chapter 2 Using the Scanner Chapter 3 Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . Contents of Package . . . . . . . . . . . . . . . . . . . . . . . . . Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview of Manual . . . . . . . . . . . . . . . . . . . . . . . . . Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Hand-Held Scanner with RS-232 Option Setup Instructions Chapter 4 General Setup Parameters Chapter 5 Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting Scanner to Host . . . . . . . . . . . . . . . . . . . Installing Interface Cable . . . . . . . . . . . . . . . . . . Removing Interface Cable . . . . . . . . . . . . . . . . . Installing Power Supply . . . . . . . . . . . . . . . . . . . Scanner Configuration Guidelines . . . . . . . . . . . . .
Table of Contents Hand-Held Scanner with RS-232 Option Message Format Parameters Chapter 7 Symbologies Chapter 8 Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . Message Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scanner Identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Hand-Held Scanner with RS-232 Option Code 128 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Minimum Length . . . . . . . . . . . . . . . . . . . . . . . . . Maximum Length . . . . . . . . . . . . . . . . . . . . . . . . Codabar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transmit Stop/Start Characters . . . . . . . . . . . . . Minimum Length . . . . . . . . . . . . . . . . . . . . . . . . . Maximum Length . . . . . . . . . . . . . . . .
Table of Contents Hand-Held Scanner with RS-232 Option Figures 3.1 4.1 4.2 4.3 C.1 Scanning Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . System Connections . . . . . . . . . . . . . . . . . . . . . . . . . Installing Interface Cable . . . . . . . . . . . . . . . . . . . . . Removing Interface Cable . . . . . . . . . . . . . . . . . . . . Autostand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5 4–1 4–2 4–3 C–2 Tables 2.A 2.B 3.A 3.B 4.A 7.A 7.B 9.
Chapter 1 A–B Using this Manual Chapter Objectives This chapter gives an overview of the manual including: • • • • • Contents of Package Contents of Package Intended Audience Overview of Manual Warnings and Cautions Related Publications You should receive the following items when ordering the Catalog No. 2755-G3-D or 2755-G6-D Scanner: • Scanner • Scanner Holder • User Manual Intended Audience No special knowledge is required to read this manual or use the scanner.
Chapter 1 Using this Manual Overview of Manual 1–2 This manual shows how to set up and use the scanner with an RS-232 serial device for non-contact scanning applications.
Chapter 1 Using this Manual Warning and Caution Symbols This manual contains the following caution and warning symbols. CAUTION: A laser caution symbol that appears where laser light is present. WARNING ! A warning symbol means people might be injured if procedures are not followed. CAUTION ! Related Publications A caution symbol is used when equipment may be damaged if procedures are not followed. Below is a list of related publications you may need to refer to when using the scanners.
Chapter 2 A–B Overview of Scanner Chapter Objectives This chapter gives an overview of the scanner including: • • • • • Function of Scanner Function of Scanner Operating Modes Scanner Setup Parameters Serial Commands Accessories The scanner is capable of scanning, decoding, and transmitting bar code data to devices equipped with RS-232 serial communication ports, including personal computers and terminals.
Chapter 2 Overview of Scanner Operating Modes The scanner functions in one of two operating modes: Hand-Held mode or Autosense mode. Hand-Held Mode In hand-held mode, you hold the scanner in your hand and press the trigger every time you want to scan a bar code symbol. Chapter 3 provides details on using the scanner in hand-held mode. Autosense Mode In this mode the scanner operates in an optional Autostand (Catalog No. 2755-NS2) for hands-free operation.
Chapter 2 Overview of Scanner Setup Parameters The built-in setup parameters of the scanner fall into four general categories: • • • • General Setup Serial Communication Message Format Symbologies Each category controls parameters that relate to specific functions of scanner operations or communications with the host device. General Setup Parameters General setup parameters are basic to the operation of the scanner.
Chapter 2 Overview of Scanner Message Format Parameters Parameters that control the format of messages transmitted to the host include: • • • • • • Prefix Suffix Scanner Identifier Code Identifier Preamble Postamble Message Format parameters are enabled or disabled by scanning bar codes in Chapter 7. Symbology Parameters The symbology parameters enable or disable the types of bar codes the scanner is capable of reading.
Chapter 2 Overview of Scanner Ordering a Scanner The following figure shows the catalog number breakdown for ordering a scanner.
Chapter 2 Overview of Scanner Scanner Accessories Table 2.A lists the RS-232 interface cables available for the scanners. Cables are available with different pinouts to support either DTE or DCE configurations. Appendix D lists the pinouts for each cable. Table 2.A Interface Cables with 25 Pin D-Type Connector Catalog No. 2755-NCR1 2755-NCR2 1 Description RS-232 DCE, Female, 8 Foot (2.4 Meter) Coiled Cable This cable is typically used with IBM PC compatible computers.
Chapter 3 A–B Using the Scanner Chapter Objectives This chapter covers some basic topics on the operation and use of the scanner including: • • • • • • • • Physical Description Physical Description LED Indicators Safety Labels Scanning Ranges Operating Scanner Beep Operating Tips Troubleshooting The scanners use a low power visible laser diode light source for non-contact scanning applications. The trigger in the handle of the scanner turns on the light beam.
Chapter 3 Using the Scanner Light, reflected off the bar code symbols, passes back through the window and is detected by light sensors. When a label is read, the laser is automatically turned off until the next pull of the trigger. The laser beam looks like a narrow red line of light. It is actually a tiny spot of light traveling very fast. The laser spot moves across the bar code symbol at approximately 35 scans/second. The bar code is scanned many times in a short period of time.
Chapter 3 Using the Scanner Safety Labels The scanners use a low power visible laser diode. As with any bright light source, such as the sun, you should avoid staring directly into the beam. Momentary exposure to a CDRH Class II laser is not known to be harmful. The following figure shows the location of all safety labels as they appear on the scanner. CAUTION ! Use of controls, adjustments, or performance of procedures other than those specified herein may result in hazardous visible light exposure.
Chapter 3 Using the Scanner Scanning Ranges The scanners can read bar code labels at various distances depending on the bar code width (width of narrowest element in bar code, either bar or space). Table 3.B defines the scanning ranges for both the standard and long range scanner. Scanning ranges are listed for symbols with bar code widths from 6.0 mil to 55.0 mil (.15 mm to 1.40 mm). Table 3.B Scanning Ranges: Standard and Long Range Scanners Bar Code Width 6.0 mil (.15 mm) 7.5 mil (.19 mm) 10.0 mil (.
Chapter 3 Using the Scanner Figure 3.1 Scanning Ranges 10 Standard Range Scanner Catalog No. 2755-G3-D 5 Scanner Width of Scanning Beam (inches) 0 0.006 in (0.15mm) 5 0.0075 in (0.19mm) 0.010 in (0.25mm) 10 0.015 in (0.38mm) Narrow Bar Width 0.020 in (0.51mm) 0.040 in (1.02 mm) 0.055 in (1.40 mm) 0 inches centimeters 5 12.7 10 25.4 15 38.1 20 50.8 25 63.5 30 76.2 Depth of Field Long Range Scanner Catalog No. 2755-G6-D 10 5 Width of 0 Scanning Beam (inches) 5 Scanner 15.0 mil (0.
Chapter 3 Using the Scanner Operating Scanner Follow these basic steps to operate scanner. 1. Check Before using the scanner, check all cable connections to make sure they are secure. Chapter 4 defines connections between scanner, power supply, and serial communication device. 2. Test Aim the scanner at the work surface and press the trigger. You should see the red beam on the work surface, and the SCANNING indicator on the back of the unit should be on. 2.
Chapter 3 Using the Scanner Beep When scanning a bar code symbol, listen for one short, high tone. It means the bar code has been decoded successfully. A low-high-medium sequence of beeps on power up means the scanner has been configured in a continuous power mode for operation with serial communication devices. Operating Tips Hold at an Angle Do not hold the scanner directly over the bar code. In this position light can reflect back into the scanner and prevent decoding. Angle the scanner slightly.
Chapter 3 Using the Scanner Troubleshooting This section provides a list of things to check if you are having problems scanning. Note: Scanning problems are most often caused by poor quality bar code symbols. If scanning problems arise, test your bar code system using the high quality bar code test symbols supplied in Appendix A. • Make sure the scanner is configured to read the the type of bar codes you are trying to scan. • Check if the bar code symbol is worn or damaged.
Chapter 4 A–B Setup Instructions Chapter Objectives Connecting Scanner to Host This chapter provides setup instructions including: • • • • Connecting Scanner to Host Scanner Configuration Guidelines Scanner Default Settings Resetting Factory Defaults Before configuring parameters of the scanner, you must connect the scanner to the host device using the appropriate interface cable and power supply. Figure 4.1 shows the connections. Figure 4.1 System Connections Power Supply Catalog No.
Chapter 4 Setup Instructions Installing Interface Cable The interface cable has a modular plug (resembling a telephone connector) on one end and a 25 pin D-Type connector on the other end. The available interface cables are listed in Table 2.A. CAUTION: ! Do not connect scanner to host until host device is turned off. Failure to do this could result in damage to the scanner. To install the interface cable: 1. Turn power to host computer OFF. 2.
Chapter 4 Setup Instructions Removing Interface Cable At some point you may have to replace the interface cable with another cable. To remove the interface cable, follow these steps. CAUTION: ! Do not remove the interface cable until host device is turned off. Failure to do this could result in damage to the scanner. 1. Turn power to host device off. 2. Disconnect power supply from AC power source. 3. Disconnect scanner from host device. 4.
Chapter 4 Setup Instructions Installing Power Supply The external power supply (Catalog No. 2755-PW1) provides power to the scanner. One end connects to a standard AC receptacle supplying the appropriate voltage level. The other end plugs into the power receptacle of the 25 pin D-Type connector. CAUTION: ! The Catalog No. 2755-PW1 Power Supply has the following polarity: +5 V + Ground If using another power supply, the polarity must be the same. To install the power supply: 1.
Chapter 4 Setup Instructions Scanner Configuration Guidelines Configuration is the process of enabling or disabling scanner operating parameters. The host system and the types of bar codes that will be encountered will determine which parameters should be enabled or disabled. Follow three basic steps when selecting parameters: 1. Review the rest of this manual to familiarize yourself with each group of scanner parameters. 2. Review the requirements of your host system and application.
Chapter 4 Setup Instructions Note: When enabling or disabling a parameter, be sure the scanner beam illuminates only one symbol at a time. The layout of this manual minimizes the accidental scanning of multiple labels. Some parameters require that you scan multiple labels to modify a setting. An example is the Intercharacter Delay parameter. To set the intercharacter delay to 5 milliseconds (msec): 1. Scan the Intercharacter Delay (GB) label and listen for one short beep.
Chapter 4 Setup Instructions Scanner Default Settings Table 4.A lists the factory default settings for each group of scanner parameters. Table 4.
Chapter 4 Setup Instructions Table 4.
Chapter 4 Setup Instructions Table 4.
Chapter 4 Setup Instructions Resetting Factory Defaults To reset the scanner to the factory default settings, scan label ZA. ZA Reset to Factory Defaults Note: Scanning this label produces a bi-level tone.
Chapter 5 A–B General Setup Parameters Chapter Objectives This chapter describes parameters specific to the operation of the scanner including: • • • • • • • System Status Power Consumption Beeper Operation Capture Count Spotter Beam Autosense Mode External Trigger Operation To set specific operating parameters, scan the appropriate bar code labels in each section. Note: Throughout this chapter, default settings for parameters are flagged by an asterisk (*).
Chapter 5 General Setup Parameters Display Configuration Example (ZB Command) Power Data Bits Char Delay Scanner ID Preamble Code ID Char Serial Buffr Standby 8 00 None None No Full Parameter 39 *Armed Yes ASCII No *Addendum – Xmit S/S No Check Ch No Send Sys # – Send Ck Ch – UPCE Expand – Limits 01–32 UPC Yes – No – – Yes Yes No – Model 5312 Beeper Loud Parity None Protocol Off Prefix Off Postamble None Labels Unbuffred Display Duplex Half Symbology EAN I 2/5 No No – – No – – – – No Yes – Yes – – – –
Chapter 5 General Setup Parameters Power Consumption You can select one of two power consumption modes for the scanner. Option @A supplies full power to the scanner at all times. Option @B allows the scanner to revert to standby mode after a successful read. This mode is a power conservation feature whereby the scanner uses extremely low power (microwatts). To supply full power to the scanner at all times, scan label @A.
Chapter 5 General Setup Parameters Beeper Operation 5–4 To disable or set the volume of the beeper, scan the appropriate option below.
Chapter 5 General Setup Parameters Capture Count Capture Count determines the number of successful, identical decodes that must occur for a valid read. You can use the capture count to enhance the security of the bar code reader. Option BC sets the capture count to 1 which requires one successful decode. BC Capture Count = 1 * Scan option BD to set the capture count to 2. Two identical decodes must occur for a valid read.
Chapter 5 General Setup Parameters Spotter Beam You can enable the scanner to use a spotter beam which helps when aiming the scanner. Each time the scanner is triggered it generates a bright laser spot for a fixed duration, after which the scanner beam is activated. The spotter beam is recommended for long range applications. Scanning label NP disables the spotter beam. Hold the trigger for two seconds after scanning.
Chapter 5 General Setup Parameters Autosense Mode In Autosense mode, the scanner has an internal object sensor allowing you to operate the scanner in an optional Autostand (Catalog No. 2755-NS2) for hands-free operation. When the scanner is placed in the Autostand it becomes immediately active for reading any bar code label presented to it. The scanner is triggered when a bar code label breaks the scan beam path between the reflective label on the stand and the scanner.
Chapter 5 General Setup Parameters External Trigger Operation External trigger operation enables an external device to control scanning. External trigger is controlled by applying an external trigger signal to the CTS input (refer to Appendix D) with external triggering enabled. When active, this signal causes scanning to begin just as if the scanner’s trigger were pressed. Scanning continues until a label is decoded or the external signal is deactivated.
Chapter 6 A–B Serial Communication Parameters Chapter Objectives This chapter covers parameters that control serial communications between the scanner and the host device including: • • • • • Baud Rate Data Transmission Parameters Intercharacter Delay Protocol Serial Transmit Buffer Serial communication parameters are selected by scanning appropriate bar code labels in each section. Note: Throughout this chapter, default settings for parameters are flagged by an asterisk (*).
Chapter 6 Serial Communication Parameters Baud Rate 6–2 The serial communication baud rate selections are listed below. Your scanner and the serial host computer must be set at the same baud rate. Scan the appropriate rate.
Chapter 6 Serial Communication Parameters Serial Data Transmission Parameters Serial transmission data consists of three or four different elements depending on the host system requirements. These elements are: • • • • Start Bit Data Bits (7 or 8) Optional Parity Bits Stop Bits (1 or 2) In this manual, these elements are represented graphically in the following manner: Start Bit 7 Bits Word Bits or 8 Bits or Stop Bits The Parity bit is used for error detection (e.g.
Chapter 6 Serial Communication Parameters 7 Data Bits, 1 Stop Bit, Parity Check If your system requires a word length of 7 Data bits, a single Stop bit, and Parity check, scan the appropriate label below.
Chapter 6 Serial Communication Parameters 7 Data Bits, 2 Stop Bits, Parity Check If your system requires a word length of 7 Data bits, 2 Stop bits, and Parity check, scan the appropriate label below. 7 Bits O EH 7 Bits E EG 7 Bits 1 EF 7 Bits O EE 8 Data Bits, 1 Stop Bit, No Parity Check If your system requires a word length of 8 Data bits, 1 Stop bit, and no Parity check, scan the label below.
Chapter 6 Serial Communication Parameters 8 Data Bits, 1 Stop Bit, Parity Check If your system requires a word length of 8 Data bits, 1 Stop bit, and Parity check, scan the appropriate label below. 8 Bits O EL 8 Bits E EK 8 Bits 1 EJ 8 Bits O EI 8 Data Bits and 2 Stop Bits If your system requires a word length of 8 Data bits and 2 Stop bits, scan the label below. Parity check is not possible with this combination of data bits and stop bits.
Chapter 6 Serial Communication Parameters Protocol Protocol controls data flow between your scanner and the serial host computer. The protocol options are: None, XON/XOFF, CTS, RTS. XON/XOFF When selecting XON/XOFF protocol, the scanner recognizes the ASCII XON/XOFF characters. The host may then stop transmission with XOFF and resume with XON. Controlled data flow is achieved between devices when the receiving device sends ASCII XON/XOFF codes to the transmitting device.
Chapter 6 Serial Communication Parameters RTS Protocol The RTS output from the scanner may be programmed to operate in one of three different modes. 1. In the default mode, RTS signals when the scanner is ready to receive commands or data. 2. RTS is in a fixed state. 3. RTS signals when the scanner has data to transmit. The RTS modes are independent of the CTS protocol. However, you must select the same active state for RTS as for CTS. You may not select CTS(–) and RTS fixed high.
Chapter 6 Serial Communication Parameters HG RTS always high HH RTS always low HI RTS high indicates scanner has data to transmit HJ RTS low indicates scanner has data to transmit HK RTS low indicates scanner ready to to receive data 6–9
Chapter 6 Serial Communication Parameters Intercharacter Delay Certain terminals and computers require an intercharacter delay to simulate the effects of keystroke delays. Selecting an intercharacter delay causes the characters to be sent at the slower rate required by the device to which you are interfacing. Scanning label GA disables intercharacter delay. No Intercharacter Delay * GA To set Intercharacter Delay to a value other than zero, scan label GB, then two separate digits from Appendix B.
Chapter 6 Serial Communication Parameters Serial Transmit Buffer The scanner supports three levels of serial buffering: Full Buffering, No Buffering, One Label Buffering. Full Buffering With Full Buffering (the default) selected, the scanner will place all scanned labels into a 64 byte serial transmit buffer if the host is unavailable to receive data. This allows you to continue scanning even though the previous label may not have been transmitted yet.
Chapter 7 A–B Message Format Parameters Chapter Objectives This chapter defines parameters that control the format of transmitted bar code messages including: • • • • Message Format Prefix Scanner Identifier Prefix and Suffix Scanner Identifier Code Identifier Preamble and Postamble A message transmitted from the scanner upon a successful decode has the following format: Preamble Code Identifier Data Postamble Suffix Some of these message parameters may not be required or may vary from one hos
Chapter 7 Message Format Parameters Prefix A prefix is a subset of the preamble normally formatted to some industry standard. It is represented by a specific ASCII code. An example of a prefix is the STX (Start of Transmission) code. Scan the appropriate prefix label.
Chapter 7 Message Format Parameters Suffix A suffix is a subset of the postamble. Like the prefix, it is normally assigned to a specific ASCII code. Examples of suffixes are CR (Carriage Return) and LF (Line Feed). Scan the suffix appropriate for your application.
Chapter 7 Message Format Parameters Scanner Identifier Scanner ID characters are used to identify individual scanners when more than one scanner is interfaced with the host system. Options available are none (Disabled) or digits 01 through 99. Scanning label JA disables the scanner identifier. JA Disable Scanner Identifier * To enter a scanner ID, scan label JB and then two separate digits from Appendix B. The ID character cannot exceed 99.
Chapter 7 Message Format Parameters Code Identifier A single-character code identifier may optionally be transmitted with a message. This option allows the host computer to identify the type of bar code scanned, as well as the encoded information. Scan option FA to disable the code identifier. FA Disable Code Identifier * Scan option FB to enable the code identifier. FB Enable Code Identifier Table 7.A shows the code identifier character assignments. Table 7.
Chapter 7 Message Format Parameters Preamble or Postamble Preambles and postambles consist of up to four ASCII characters. Each ASCII character is encoded as two hexadecimal characters. Use Table 7.B, Hexadecimal Conversion Table, to look up the hexadecimal equivalent. To use the conversion table: 1. Find each ASCII character in the table and locate the corresponding bold hexadecimal equivalent character in the top row and the left column of the table.
Chapter 7 Message Format Parameters Preamble A preamble is a string of characters that prefixes a message that is transmitted to the host. The preamble may be used to identify the scanner that sent the message. The maximum preamble length is four ASCII characters. KA Preamble=None* To enter a preamble, scan the KB label, then refer to Table 7.B to enter the four ASCII characters. The procedure on the previous page explains how to enter preamble characters.
Chapter 7 Message Format Parameters 0 1 2 3 4 5 6 7 7–8 Table 7.B Hexadecimal Conversion Table 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI 1 DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US 2 SP ! ” # $ % & ’ ( ) * + , – .
Chapter 7 Message Format Parameters 8 Table 7.
Chapter 7 Message Format Parameters No Read Message When the scanner is triggered, the scan beam is active until: 1. a label is decoded 2. the trigger is released 3. the scan beam timeout period has elapsed If the No Read Message is enabled, case 2 and 3 will cause the scanner to substitute NR (No Read) for the bar code data in the host message.
Chapter 8 A–B Symbologies Chapter Objectives This chapter shows how to enable bar code symbologies the scanner is capable of reading including: • Code 39 • UPC-A and UPC-E (with optional 2 or 5-digit supplements) • EAN-8 and EAN-13 (with optional 2 or 5-digit supplements) • • • • Interleaved 2 of 5 Standard 2 of 5 Code 128 Codabar To disable or enable specific bar code symbologies, scan the appropriate bar code labels in each section.
Chapter 8 Symbologies Code 39 To disable Code 39, scan label OA. OA Disable Code 39 To enable Code 39, scan option OB or OC. After enabling Code 39, make any additional required selections from options OD through OI.
Chapter 8 Symbologies Modulo 43 Check Character Options OD and OE allow you to enable or disable the Modulo 43 check character for Code 39. To enable the Modulo 43 check character, scan label OE. To disable the Modulo 43 check character, scan label OD. OD Disable Modulo 43 * Check Character OE Enable Modulo 43 Check Character Transmit Start/Stop Characters You can transmit or suppress the Start and Stop characters in Code 39. To suppress transmission of the Start and Stop characters, scan label OF.
Chapter 8 Symbologies Code 39 (continued) Minimum Length The minimum length of Code 39 is set by scanning label OH and then two digits (01 - 32) in Appendix B. OH + Minimum Length (Specified by two digits 01-32) For example, to enter a minimum length of 05, scan the OH label, then scan codes 0 and 5 in Appendix B. Maximum Length The maximum length of Code 39 is set by scanning label OI and then two digits (01 - 32) in Appendix B.
Chapter 8 Symbologies UPC (A and E) To disable all UPC labels, scan label QA. QA Disable UPC (A and E) Supplements Option QB or option QC enable both UPC-A and UPC-E. To enable scanning of UPC labels with the 2 or 5 Digit supplements, scan label QB. QB Enable UPC with 2 or 5 Digit Supplement Enabled To enable scanning of UPC labels with the 2 or 5 Digit supplements disabled, scan label QC.
Chapter 8 Symbologies UPC (A and E) (continued) Transmit Number System Digit You can enable or disable the transmission of the first character in a UPC symbol (the number system character). To disable transmission of the first character in a UPC symbol, scan label QD. QD Disable Transmission Number System Digit To enable transmission of the first character in a UPC symbol (the number system character), scan label QE.
Chapter 8 Symbologies UPC to EAN Translation You can cause UPC labels to be transmitted as EAN-13 labels. To enable UPC to EAN translation, scan label QJ. QJ Enable UPC to EAN Translation To disable UPC to EAN translation, scan label QK.
Chapter 8 Symbologies EAN/JAN Scan label RA to disable EAN/JAN (8 or 13 digit). RA Disable EAN/JAN * (8 or 13 digit) Supplements Option RB or option RC enables both EAN 8-digit and EAN 13-digit. EAN/JAN labels can be read with or without supplements. To enable scanning of EAN/JAN labels with the 2 or 5 digit supplements, scan label RB. RB Enable EAN/JAN with 2 or 5 Digit Supplement Enabled To enable scanning of EAN/JAN labels with the 2 or 5 Digit supplements disabled, scan label RC.
Chapter 8 Symbologies Transmit Number System Digit You can enable or disable the transmission of the first character in an EAN/JAN symbol (the number system character). To disable transmission of the first character in an EAN/JAN symbol, scan label RD. RD Disable Transmission Number System Digit To enable transmission of the first character in an EAN/JAN symbol, scan label RE.
Chapter 8 Symbologies Interleaved 2 of 5 Scan label PA to disable Interleaved 2 of 5. PA Disable Interleaved 2 of 5 * Check Digit You can enable Interleaved 2 of 5 with or without the check digit. To enable Interleaved 2 of 5 without the check digit, scan label PB. PB Enable Interleaved 2 of 5 without Check Digit To enable Interleaved 2 of 5 with the check digit, scan label PC.
Chapter 8 Symbologies Minimum Length To set a minimum length (other than two) for Interleaved 2 of 5, scan label PD and then two digits (02-32) in Appendix B. The value of the number you scan must be even. Odd numers are ignored. PD + Minimum Length (Specified by two digits 02-32) For example, to enter a minimum length of 12, scan the PD label, then scan codes 1 and 2 in Appendix B. Maximum Length To set a maximum length for Interleaved 2 of 5, scan label PE and then two digits (02-32) in Appendix B.
Chapter 8 Symbologies Standard 2 of 5 Scan label PF to disable Standard Code 2 of 5. Disable * Standard 2 of 5 PF To enable Standard Code 2 of 5, scan label PG. Enable Standard 2 of 5 PG Minimum Length To set a minimum length (other than 4) for Standard Code 2 of 5, scan label PH and then two digits (04-32) in Appendix B. PH + Minimum Length (Specified by two digits 04–32) Maximum Length To set a maximum length for Standard Code 2 of 5, scan label PI and then two digits (04-32) in Appendix B.
Chapter 8 Symbologies Code 128 Scan label TA to disable Code 128. TA Disable Code 128 Scan option TB to enable Code 128. TB Enable Code 128 * Minimum Length To set a minimum length for Code 128, scan label TC, then two digits (01-32) in Appendix B. TC + Minimum Length (Specified by two digits 01-32) Maximum Length To set a maximum length for Code 128, scan TD, then two digits (01-32) in Appendix B.
Chapter 8 Symbologies Codabar Scan label VA to disable Codabar. VA Disable Codabar * Scan option VB to enable Codabar. VB Enable Codabar Transmit Start/Stop Characters You can enable or disable the transmission of the Start and Stop characters in Codabar. To disable transmission of the Start and Stop characters, scan label VC. VC Disable Transmission * Start/Stop Characters To enable transmission of the Start and Stop characters, scan label VD.
Chapter 8 Symbologies Minimum Length To set a minimum length for Codabar, scan label VE and then two digits (01-32) in Appendix B. VE + Minimum Length (Specified by two digits 01-32) For example, to enter a minimum length of 05, scan the VE label, then scan codes 0 and 5 in Appendix B. Maximum Length To set a maximum length for Codabar messages, scan label VF, and then two digits (01-32) in Appendix B.
Chapter 9 A–B Serial Commands Chapter Objectives This chapter covers serial commands that can be sent from the host to configure the scanner including: • • • • • Serial Command Format Serial Command Format Manual Scanning Interaction ACK/NAK Protocol Power Standby and Serial Commands Communication Parameter Changes The format of serial commands is as follows: STX ESC LT1 LT2 ETX Note: STX= Ctrl-B ETX= Ctrl-C STX, ESC, and ETX are ASCII codes whose values are 02H, 1BH, and 03H,
Chapter 9 Serial Commands Table 9.A Serial Programming Command Examples Command STX ESC PC ETX STX ESC PD12 ETX STX ESC PE14 ETX STX ESC KB31323334 ETX 1 Function Enable Interleaved 2 of 5 with check digit. Set Interleaved 2 of 5 minimum length to 12. Set Interleaved 2 of 5 maximum length to 14. Set Preamble to ’1234’. STX ESC LB6162364 ETX Set Postamble to ’abcd’. 1 1 Each ASCII character is encoded as two hexadecimal characters. For example: 1=31, 2=32, 3=33, 4=34 and a=61, b=62, c=63, d=64.
Chapter 9 Serial Commands ACK/NAK Protocol The scanner provides ACK/NAK protocol during serial programming to provide feedback to the host computer which is programming the scanner. ACK/NAK protocol provides two functions. • It provides the host with positive acknowledge• ment that its commands are being accepted and acted upon. It ensures the host will not issue commands to the scanner faster than the scanner can process them.
Chapter 9 Serial Commands Power Standby and Serial Commands When the scanner is programmed for standby power operation (@B), the first character of the command is used to wake-up the scanner; it will not be recognized by the scanner’s CPU. When there is any possibility that the scanner is in standby mode, an extra space code should be transmitted before STX to ensure the scanner is awake before sending commands to it.
Chapter 10 A–B Specifications Hand-Held Scanners Catalog No. 2755-G3-D Catalog No. 2755-G6-D Optical Nominal Scan Rate Wavelength (nominal) Maximum Pitch Maximum Skew Scanning Range Minimum Bar Width 6.0 mil (.15 mm) 7.5 mil (.19 mm) 10.0 mil (.25 mm) 15.0 mil (.38 mm) 20.0 mil (.51 mm) 40.0 mil (1.02 mm) 55.0 mil (1.40 mm) 35 scans/second 670 nm ±55 degrees ±65 degrees Standard Range (2755-G3-D) 3.0 in - 5.0 in 7.6 cm - 12.7 cm 2.5 in - 7.5 in 6.4 cm - 19.0 cm 1.0 in - 10.0 in 2.5 cm - 25.4 cm 1.
Chapter 10 Specifications Mechanical Dimensions Inches Millimeters Weight LED Indicators Good Read Scanning 4.0(L) x 2.8(W) x 6.6(H) 102(L) x 71(W) x 168(H) 8.0 oz (0.23 kg) Green Yellow Environmental Operating Temperature Storage Temperature Relative Humidity Electrostatic Discharge Drop Test Dust and Rain 0° to 122° F -18° to +50° C -40° to 158° F -40° to +70° C 5 to 95% (noncondensing) 15kv to any external surface 5 feet (1.27 meter) on concrete MIL STD 810D Sections 510.2I & 506.
A Appendix A–B Bar Code Test Symbols Use the following labels to insure that your scanner is functioning properly. The only label the long range scanner can read below is the Interleaved 2-of-5 (15 mil) label.
Appendix B A–B Digit Selection Symbols B–1
Appendix C A–B Autosense Mode To set up the scanner to operate in Autosense mode using the optional Autostand follow the steps below while referring to Figure C.1. 1. Enable the scanner to operate in Autosense mode by scanning the Enable Autosense (NO) label in Chapter 5. 2. Attach the Stand Riser to the Stand Base using two of the supplied #6-32 thumb screws. 3. Attach the Scanner Holder to the top of the Stand Riser using the other two #6-32 thumb screws. 4.
Appendix C Autosense Mode Figure C.1 Autostand Scanner Scanner Holder #6-32 Thumb Screws Reflective Label 1 Stand Riser #6-32 Thumb Screws Stand Base Important: When the scanner is to be powered from a battery such as in a hand-held terminal, you should disable Autosense mode. In this application, you may need to use the power conservation mode (see page 5–3) of the scanner when drawing power from a battery. Autosense mode will function only in full power mode.
Appendix D A–B Interface Cable Pinouts The Catalog No. 2755-NCR1 Cable is typically used to connect the scanner to IBM PC Compatible computers. You may have to use an adapter if your computer has a 9-pin port. Table D.1 RS232 DCE, 25-Pin, Female, D-Type Connector Catalog No. 2755-NCR1 Pin 2 3 4 1 Signal Name RxD TxD CTS Function Serial data receive input. Serial data transmit output. Clear-To-Send (or External Trigger) 1 Handshaking input line. 5 RTS Request-To-Send Handshaking output line.
Appendix D Interface Cable Pinouts The Catalog No. 2755-NCR2 cable is compatible with the AUX port on the Single and Dual-Head Enhanced Bar Code Decoders (Catalog No. 2755-DS1A, -DD1A). Table D.2 RS232 DTE, 25-Pin, Male, D-Type Connector Catalog No. 2755-NCR2 Pin 2 3 4 5 1 D–2 Signal Name TxD RxD RTS Function Serial data transmit output. Serial data receive input.
Appendix E A–B Maintenance This appendix provides general maintenance information for your scanner. Cleaning Window You may need to clean the window of the scanner. Carefully clean the window by first removing loose particles of dirt with clean air. Then use an optical quality cloth moistened with an optical quality cleaning fluid for plastic lenses and wipe the window in a single direction (don’t wipe cloth back and forth across window). Do not leave streaks.
Appendix F A–B Scanner Commands Each label in this manual is preceded by two characters which represent the serial command for a scanner parameter. The following tables list the command mnemonic for each scanner parameter and the page location of the corresponding label.
Appendix F Scanner Commands F–2 Mnemonic DA DB DC DD DE DF DG Serial Communication Parameters Function Baud Rate = 300 Baud Rate = 600 Baud Rate = 1200 Baud Rate = 2400 Baud Rate = 4800 Baud Rate = 9600 Baud Rate = 19200 Page # 6-2 6-2 6-2 6-2 6-2 6-2 6-2 EA EB EC ED EE EF EG EH EI EJ EK EL EM EN HA HB HC HD HG HH HI HJ HK GA GB NE NF NG 7 Data Bits, 1 Stop Bit, Space Parity 7 Data Bits, 1 Stop Bit, Mark Parity 7 Data Bits, 1 Stop Bit, Even Parity 7 Data Bits, 1 Stop Bit, Odd Parity 7 Data Bits, 2 Sto
Appendix F Scanner Commands Mnemonic IA IB IC MA MB MC MD ME MF JA JB FA FB KA KB LA LB Message Format Parameters Function Prefix = None Prefix = STX Prefix = SOH Suffix=None Suffix = ETX Suffix = CR Suffix = LF Suffix = HT Suffix = CR and LF Disable Scanner Identifier Enable Scanner Identifier Disable Code Identifier Enable Code Identifier Preamble = None Preamble = 4 ASCII Characters Postamble = None Postamble = 4 ASCII Characters Mnemonic OA OB OC OD OE OF OG OH OI QA QB QC Symbology Parameters Funct
Appendix F Scanner Commands Mnemonic QD QE QF QG QH QI QJ QK RA RB RC RD RE RF RG PA PB PC PD PE PF PG PH PI TA TB TC TD VA VB VC VD VE VF F–4 Symbology Parameters (continued) Function Disable Transmission UPC Number System Digit Enable Transmission UPC Number System Digit Disable Transmission UPC Check Digit Enable Transmission UPC Check Digit Disable Expanded UPC-E Enable Expanded UPC-E Enable UPC to EAN Translation Disable UPC to EAN Translation Disable EAN/JAN (8 or 13) Enable EAN/JAN with 2 or 5 Dig
Glossary A–B ACK: See acknowledgement. acknowledgement (ACK): An ASCII control character used to acknowledge the reception and acceptance of a transmission block. AIM: Acronym for Automatic Identification Manufacturers. alphanumeric: The character set containing letters, numbers, punctuation marks, and symbols. ASCII: American Standard Code for Information Interchange. It is a seven-bit code with an optional parity bit used to represent alphanumerics, punctuation marks, and control codes.
Glossary check digit: A digit included within a symbol whose value is based mathematically on other characters included in the symbol. It is used to mathematically check the accuracy of a symbol. clear area: A clear space, containing no dark marks, that precedes the start character of a symbol and follows the stop character. Codabar: A numeric symbology consisting of 16 data characters and 4 start/stop characters. Codabar is primarily used by the medical community.
Glossary hex: Abbreviated form of the word hexadecimal. See hexadecimal. hexadecimal: A base-16 numbering system that uses the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F. horizontal bar code: A bar code or symbol presented in a manner that its overall length dimension is parallel to the horizon. The bars look like a picket fence. Interleaved 2 of 5: A symbology in which characters are paired together using bars to represent odd number characters and spaces to represent even number characters.
Glossary self-checking: A bar code or symbol using a checking algorithm which can be applied to each character to guard against undetected errors. Codes that are not self-checking may employ a check digit or other redundancy in addition to the data message. space: The lighter element of a bar code formed by the background between bars. start/stop characters: Bar code characters that provide the scanner with information on how the code is bounded and its orientation.
Index A Accessories, 2–6 ACK/NAK Protocol, serial programming, 9–3 Autosense Mode, 2–2 disable, 5–7 enable, 5–7 installing autostand, C–1 Code 39 disable, 8–2 enable, 8–2 maximum length, 8–4 minimum length, 8–4 modulo 43 check character, 8–3 start/stop characters, 8–3 Code Identifier, 7–5 Bar Code Test Symbols, A–1 Configuration of Scanner default settings, 4–7 guidelines, 4–5 serial programming, 9–1 viewing, 5–1 Baud Rate, 6–2 Continuous Full Power, 5–3, 10–1 Beep, 3–7 CTS Protocol, 6–7 B Beeper
Index F Factory Default Settings, 4–7 G General Setup Parameters, 2–3 autosense mode, 5–7 beeper operation, 5–4 capture count, 5–5 external trigger operation, 5–8 power consumption, 5–3 spotter beam, 5–6 system status, 5–1 H Hand-Held Mode, 2–2 I Inspecting Scanner Cables, E–1 Intercharacter Delay, 6–10 Interface Cable installing, 4–2 removing, 4–3 Interface Cables, 2–6 pinouts, D–1 Interleaved 2 of 5 disable, 8–10 enable with or without check digit, 8–10 maximum length, 8–11 minimum length, 8–11 I–2
Index P Preamble, 7–6, 7–7 Scanner beep, 3–7 beeper operation, 5–4 cleaning window, E–1 configuration, 4–5 description of, 3–1 factory default settings, 4–7 inspecting cables, E–1 LED Indicators, 3–2 maintenance, E–1 operating ranges, 3–4, 3–5 operation of, 3–6 parameters, 2–3 power consumption, 5–2 safety labels, 3–3 scan rate, 10–1 specifications, 10–1 troubleshooting, 3–8 visible laser diode, 3–1 Prefix, 7–2 Scanner Identifier, 7–4 Protocols CTS, 6–7 RTS, 6–8 XON/XOFF, 6–7 Scanning Tips, 3–7 Para
Index Serial Programming, 2–3, 9–1 ACK/NAK protocol, 9–3 effect on manual scanning, 9–4 examples, 9–2 parameter changes, 9–4 when using standby power, 9–4 Serial Transmit Buffer, 6–11 Setup installing interface cable, 4–2 installing power supply, 4–4 removing interface cable, 4–3 Specifications certification, 10–2 electrical, 10–1 environmental, 10–2 mechanical, 10–2 optical, 10–1 Spotter Beam disable, 5–6 enable, 5–6 Standby Power, 5–3, 10–1 Start Bit, 6–3 Stop Bits, 6–3 Suffix, 7–3 Symbologies, 2–4 Codab
Catalog Number 2755-NU002 Series A 40062-245-01(A) Copyright 1992 Allen-Bradley Company, Inc.
