Wonderware Siemens SIMATIC NET S7 I/O Server User’s Guide Revision F November 2000 Wonderware Corporation
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i Contents Introduction ......................................................................................................................1 Communication Protocols .........................................................................................1 Accessing Remote Items via the I/O Server ..............................................................2 Getting Started Quickly with the I/O Server .....................................................................3 Required Hardware and Software.
ii Table of Contents Item Names .................................................................................................................... 26 Siemens SIMATIC S7 PLC Item Naming .............................................................. 26 Data Blocks DB (Datenbausteine) ................................................................... 27 Flag Bytes (Merker)......................................................................................... 28 Input Bytes (Eingänge) ....................
Wonderware Siemens SIMATIC NET S7 I/O Server Introduction The Wonderware Siemens SIMATIC NET S7 I/O Server (referred to as the server through the remainder of this user’s guide) is a Microsoft Windows application program that acts as a communication protocol server. It allows other Windows application programs access to data within the Siemens SIMATIC S7 300/400 family of PLCs.
2 Wonderware Siemens SIMATIC NET S7 I/O Server SuiteLink uses a TCP/IP based protocol and is designed specifically to meet industrial needs such as data integrity, high-throughput, and easier diagnostics. This protocol standard is only supported on Microsoft Windows NT 4.0 and Windows 2000. SuiteLink is not a replacement for DDE, FastDDE, or NetDDE. The protocol used between a client and a server depends on your network connections and configurations.
Getting Started Quickly with the I/O Server 3 Getting Started Quickly with the I/O Server This section briefly describes the components and procedures required to prepare the Wonderware Siemens SIMATIC NET S7 I/O Server for use. Detailed descriptions can be found in the manuals provided by Siemens and sections of this user's guide.
4 Wonderware Siemens SIMATIC NET S7 I/O Server S7 Main Window Double-click on the server’s icon to start. When the server starts, the main window will appear: The current configuration file and its full path are displayed in the main window title bar. If any topics are active, they will appear in the client area of this window called the topic monitor list. View Menu The View menu has two options that change the appearance of the main window.
File Menu 5 File Menu File menu options deal with loading and saving the internal topic configuration database. New Clears the internal topic database for a new topic configuration. This menu is disabled when the server is active (a client is connected). Open Replaces the internal topic database with the information contained in the user selected topic configuration file. This file is automatically loaded the next time the server is started.
6 Wonderware Siemens SIMATIC NET S7 I/O Server Configuring the I/O Server Once the server has been installed, some configuration is required. Configuring the server automatically saves the data in a configuration file. If no configuration file is selected, the user is prompted to select a filename. To access the options used for the various configurations, open the Configure menu: Note If any of the options appear grayed, then these options are not available with this software version.
Configuring Automatic Topic Generation 7 Configuring Automatic Topic Generation The Automatic Topic Generation option is used to automatically generate all topics according to the Siemens SIMATIC NET S7 configuration. All combinations of CP names and connection names are automatically used to create a unique topic name.
8 Wonderware Siemens SIMATIC NET S7 I/O Server This option is selected when adding new names and is the safest (default) mode. It will not change existing topics. Enter the frequency (in milliseconds) that the server will acquire data for the items/points associated with all the topics generated by this procedure. The lowest nonzero value you can enter is 100ms for topics with cyclic services and 10ms for topics that have cyclic services disabled.
Configuring a Topic Definition 9 Configuring a Topic Definition Use the Topic Definition option from the Configure menu to create new, modify, or delete topic definitions. One or more topic definitions must exist for each PLC that the server will communicate with. Each topic definition must contain a unique name for the PLC associated with it.
10 Wonderware Siemens SIMATIC NET S7 I/O Server S7 Topic Definition Enter a unique name for the topic. Note When communicating with InTouch, this exact name is used as the topic name in the Access Name definition. Select the name of the CP that will be used by this topic. These names are read out automatically of the S7 SAPI database. If you configure the S7 server offline (no S7 SAPI or board installed) you can directly type in a CP name. Select the name of the VFD that will be used by this topic.
Configuring a Topic Definition 11 Select the name of the connection that will be used by this topic. Only connection names that correspond to the selected CP and VFD are found in the list. Changing the CP name and/or changing the VFD name changes the list contents of the connection combo box. If you configure the S7 IO server offline (no S7 SAPI or board installed) you can directly type in a connection name.
12 Wonderware Siemens SIMATIC NET S7 I/O Server With this 3 radio buttons you are able to tune the poking behaviour to the PLC. The 3 modes behave as follows. Control mode: This mode makes no folding of write values. This should be selected when using this topic with control clients like InBatch and InControl. If selected the server processes all poked values in the order they are received from a client and makes no folding of poke values.
Configuring a Topic Definition 13 Timeouts are needed for block services to supervise the reading of initial values and updating the block items to this connection. A timeout value 0 disables the time supervision of block messages. Block services are unconfirmed services. If the remote station does not send data within this time range, the block service is reinitialized again and an error message is displayed in the WWLogger. Select if Alarms or Events will be available in this topic.
14 Wonderware Siemens SIMATIC NET S7 I/O Server Configuring the I/O Server Settings Use the Server Settings option from the Configure menu to change the protocol timer, network using Wonderware NetDDE, change the default configuration file path, or to enable the server to start automatically as a Windows NT service. Note When configuring the server on Windows NT, the user must be logged on with system administrator privileges. This will ensure that updates to the system registry may be performed.
Configuring the I/O Server Settings 15 Enabling this option will cause the server to start as a Windows NT service. Windows NT offers the capability of running applications even when a user is not logged on to the system. This is valuable when systems must operate in an unattended mode. Enabling this option and rebooting the system will cause the server to run as a Windows NT service. However, to view configuration information or to reconfigure the server, the user must log on to the system.
16 Wonderware Siemens SIMATIC NET S7 I/O Server Configuring Security Use the Security option from the configure menu to control server configuration changes. Security When the server is not active (no clients connected), all server configuration options are available for modification. The default setting for Allow configuration while topics are active is disabled. When disabled, all topics are viewable but locked against changes while the server is active (a client is connected).
Configuring Logger 17 Configuring Logger Use the Logger option from the configure menu to set the working logger mode of the server. The options controlled by this dialog box are NOT retained in the configuration file. Set Logger Mode Note Each time the server starts, the logger mode will default to ERRORS. Select OFF to disable normal server logging. Select ERRORS for normal operation logging to the Wonderware Logger.
18 Wonderware Siemens SIMATIC NET S7 I/O Server Data Menu The Data menu contains two commands, Monitor and Dump Active Data, that are used for diagnostic purposes during runtime (when a client is attached). The remaining command, DB Dump, is used to transfer the internal topic database to InTouch. S7 Data Monitor Use the Monitor option from the data menu to display information about a selected topic with active items or errors. The information is updated as it changes.
Data Menu 19 This drop down list box allows you to select any of the active topics. A preceding ‘*’ indicates that at least one item in this topic has an error while a preceding ‘#’indicates bad status. This field displays the current configured update interval of the topic. This value changes whenever the value is poked via I/O. The displayed value is the UPDATEINTERVAL item value. This field displays the current update interval of the slowest item of the topic.
20 Wonderware Siemens SIMATIC NET S7 I/O Server The item data list box displays information about each item. The box is divided into 6 columns. The first column displays the message type and the orderid of the message which contains this item (‚P‘for a polled message and ‚C‘for a cyclic message). The second column shows the filling of the request and response PDU. The maximum value is the PDU size shown above in the monitor window. The third column displays the data quality.
Data Menu 21 No access 0004 Bad, Configuration Error. Data communications are good. Data cannot be sent and/or received. Cannot access the item. The item does not exist. The item is not available. The server is able to communicate with the PLC but is not able to access the register. The server determined the point is not valid. The PLC responds that the register does not exist, cannot be read, or cannot be written. Cannot access a fenced, write-protected, or read-only item.
22 Wonderware Siemens SIMATIC NET S7 I/O Server Click on an item line to open a dialog box displaying the item properties: Click OK to return to the S7 Data Monitor dialog box. Click Dump to dump the contents of the monitor window into an ASCII text file. The resulting file can be loaded into Excel or any standard text editor. All columns are separated by tabs. After the dump is complete, a message box containing the newly created ASCII text file name is displayed.
Data Menu 23 Dump Active Data Use the Dump Active Data option from the data menu to dump information on topics with active items into an ASCII text file. The resulting file can be loaded into Excel or any standard text editor. All columns are separated by tabs. The server automatically generates the ASCII text file name and sets the files location using the following pattern: \datdmpXX.txt Where XX is a two digit number between 00 and 99.
24 Wonderware Siemens SIMATIC NET S7 I/O Server Dump Topic Database Use the DB Dump option from the data menu to dump the internal topic database into a CSV format file. Wonderware’s DbLoad utility can use the resulting file to automatically generate InTouch access names.
Accessing I/O Server Help 25 Accessing I/O Server Help The Help menu contains two commands that are used to access help for the server. The following briefly describes the Help menu options. Contents This option is used to display the table of contents for the Help file. How to Use Help This option is used to access a list of basic instructions for using the Help file.
26 Wonderware Siemens SIMATIC NET S7 I/O Server Item Names The Wonderware Siemens SIMATIC NET S7 IO Server uses an item naming convention based on the two letter data type identifiers that are used in programming Siemens PLCs. With one exception, the Siemens SIMATIC NET S7 IO Server accepts both German and English standard identifiers. Siemens SIMATIC S7 PLC Item Naming The following tables represent the Item Naming for the Siemens SIMATIC S7 PLC.
Item Names 27 Data Blocks DB (Datenbausteine) Instance Blocks DI (Instanzbausteine) Data Format Item/Point Suffix Data Type Range Bit Dd,Xx.y Discrete 0 or 1 String Dd,Sx,v Message String Dd,STRINGx,v Message String Dd,Bx Integer 0 to 255 Dd,BYTEx Integer 0 to 255 Message 1990-1-1-0:00:00.000 to 2089-12-31-23:59:59.
28 Wonderware Siemens SIMATIC NET S7 I/O Server Note All Data Blocks are Read/Write (d=1 to 65,535, x=0 to 65,535, n=0 to 65,534, m=0 to 65,532, y=0 to 7, v=1 to net PDU data size/type size - header information, this size may vary). The longest string or array that can be read in a cyclic service has the length of the PDU size minus 32 bytes. The longest string InTouch can process is 131 bytes. The longest string that can be poked is 256 bytes or the PDU size minus 28 bytes, whichever is less.
Item Names Flag Bytes (Merker) Data Format Integer Integer Array Double Word Item/Point (continued) Suffix Data Type Range BCD D Integer Integer Integer Message Message Message -32768 to 32767 -32768 to 32767 -999 to 999 1990-1-1 to 2168-12-31 Hex ASCII String Hex ASCII String FINTn MINTn FINTn,v MINTn,v FDm MDm FDWORDm MDWORDm BCD TOD T Double Word Array Double Integer 29 FDm,v MDm,v FDWORDm,v MDWORDm,v Integer Integer Integer Integer Integer Message Message Message to 2147483647 to 2147
30 Wonderware Siemens SIMATIC NET S7 I/O Server Input Bytes (Eingänge) Data Format Item/Point Bit Ix.y Ex.y IXx.y EXx.y Discrete Discrete Discrete Discrete 0 0 0 0 String ISx,v ESx,v ISTRINGx,v ESTRINGx,v Message Message Message Message String String String String IBx EBx IBYTEx EBYTEx Integer Integer Integer Integer Message 0 to 255 0 to 255 0 to 255 0 to 255 1990-1-1-0:00:00.000 to 2089-12-31-23:59:59.
Item Names 31 Input Bytes (Eingänge) (continued) Data Format Double Word Array Double Integer Item/Point Suffix IDm,v Message Hex ASCII String Message Hex ASCII String IDWORDm,v Message Hex ASCII String EDWORDm,v Message Hex ASCII String IDINTm Integer -2147483648 to 2147483647 Integer -2147483648 to 2147483647 Integer -9999999 to 9999999 BCD Real Real Array Range EDm,v EDINTm Double Integer Array Data Type TOD Message 0:00:00.000 to 23:59:59.
32 Wonderware Siemens SIMATIC NET S7 I/O Server Output Bytes (Ausgänge) Data Format Item/Point Suffix Data Type Range Bit Ox.y Ax.y OXx.y AXx.y Discrete Discrete Discrete Discrete 0 or 1 0 or 1 0 or 1 0 or 1 String OSx,v ASx,v OSTRINGx,v ASTRINGx,v Message Message Message Message String String String String Byte OBx ABx OBYTEx ABYTEx Integer Integer Integer Integer Message 0 to 255 0 to 255 0 to 255 0 to 255 1990-1-1-0:00:00.000 to 2089-12-31-23:59:59.
Item Names 33 Output Bytes (Ausgänge) (continued) Data Format Item/Point Suffix Data Type Range Double Word Array ODm,v ADm,v ODWORDm,v ADWORDm,v Message Message Message Message Hex ASCII String Hex ASCII String Hex ASCII String Hex ASCII String Double Integer ODINTm Integer -2147483648 to 2147483647 ADINTm Integer -2147483648 to 2147483647 BCD Integer -9999999 to 9999999 TOD Message 0:00:00.000 to 23:59:59.
34 Wonderware Siemens SIMATIC NET S7 I/O Server Peripheral Input Bytes (Peripherieeingänge) (continued) Data Format Byte Array Char Item/Point Suffix Word PIBx,v Message Hex ASCII String Message Hex ASCII String PIBYTEx,v Message Hex ASCII String PEBYTEx,v Message Hex ASCII String PICHARx Integer -128 to 127 PECHARx Integer -128 to 127 Message 1990-1-1-0:00:00.000 to 2089-12-31-23:59:59.
Item Names 35 Peripheral Input Bytes (Peripherieeingänge) (continued) Data Format Item/Point Suffix Data Type Range ±3.4e38 ±3.4e38 Hex ASCII String Hex ASCII String Real PIREALm PEREALm Real Real Real Array PIREALm,v PEREALm,v Message Message Note All Peripheral Inputs are Read Only (x=0 to 65,535, n=0 to 65,534, m=0 to 65,532, v=1 to net PDU data size/type size - header information, this size may vary).
36 Wonderware Siemens SIMATIC NET S7 I/O Server Peripheral Output Bytes (Peripherieausgänge) (continued) Data Format Item/Point Suffix PAWORDn Data Type Range Integer 0 to 65535 BCD Integer 0 to 9999 KT Message 0.0 to 999.
Item Names 37 Counters Data Format Item/Point Word Suffix Data Type Range Cx None Integer 0...65535 Zx None Integer 0 to 65535 BCD Integer 0 to 9999 KT Message 0.0 to 999.3 S5T Message 0ms to 2h46m30s Note All Counters are Read/Write (x=0 to 65,535). The Wonderware Siemens SIMATIC NET S7 I/O Server will process a write (POKE) to a Counter. Although the S7 server allows to poke any word value into counters, the S7 PLC can only process values in the range of 0..2457 or 0..999 (BCD).
38 Wonderware Siemens SIMATIC NET S7 I/O Server Block Items (continued) Data Format Item/Point Byte Array BLd,Bx,v BLd,BYTEx,v Char BLd,CHARx Suffix Data Type Range Message Message Hex ASCII String Hex ASCII String Integer Message Char Array BLd,CHARx,v Message -128 to 127 1990-1-1-0:00:00.000 to 2089-12-31-23:59:59.999 Hex ASCII String Word BLd,Wn BLd,WORDn BCD KT S5T TR D Integer Integer Integer Message Message Real Message Integer Integer 0 to 65535 0 to 65535 0 to 9999 0.0 to 999.
Item Names 39 Alarms and Events The Wonderware Siemens SIMATIC NET S7 I/O Server offers the possibility to read Alarms and Events generated either by SFB33 to SFB36 (Alarms) or by the Symbol Editor (Events). The item syntax for Alarms and Events is as follows: ALARM.[,[]] EVENT.
40 Wonderware Siemens SIMATIC NET S7 I/O Server Alarms and Events (continued) Item EVENT Extension 1 Message Range DINTm,v Message Hex ASCII String REALm Real REALm,v Message ±3.4e38 Hex ASCII String EVENT_STATE Integer 0 to 65535 STATE ACK_STATE TIME_STAMP NO_ADD_VALUES Integer Integer Message Integer Message 0 to 65535 0 to 65535 String 0 to 10 String Xx.
Item Names 41 Note All Alarms and Events are Read only ( is the ID defined by Step7, in integer format, filled with leading zeros up to 6 characters; w=1 to 10; x=0 to 65,535; n=0 to 65,534; m=0 to 65,532; y=0 to 7; v=1 to net PDU data size/type size - header information, this size may vary). The longest string or array that can be read in a cyclic service has the length of the PDU size minus 32 bytes. The longest string InTouch can process is 131 bytes.
42 Wonderware Siemens SIMATIC NET S7 I/O Server Predefined Item/Point Names All S7 topics have predefined item/point names to monitor and control communication properties. UPDATEINTERVAL Item The UPDATEINTERVAL item is used to access the currently set update interval. It is the same value displayed in the monitor window of the S7 server. It indicates the currently requested update interval in milliseconds.
Predefined Item/Point Names 43 STORESETTINGS Item The STORESETTINGS item is used to make the temporary update interval changes via I/O permanent. If the client pokes a value of 1 into the STORESETTINGS item the currently set update interval is written to the servers configuration file. If the update interval has been changed via I/O and STORESETTINGS is not poked to 1 the server will use the original update interval for that topic the next time it is started. Reading the item will always give 0.
44 Wonderware Siemens SIMATIC NET S7 I/O Server WRITECOMPLETE Item The WRITECOMPLETE item is used to access the state of pending write activities on the corresponding topic. If the topic is opened the value of the WRITECOMPLETE item is initially 1 indicating all write activities are complete - no pokes are pending. If values are poked into any items of the topic the value of the WRITECOMPLETE item changes to 0 indicating write activity is currently in progress.
Predefined Item/Point Names 45 READCOMPLETE Item The READCOMPLETE item is used to access the state of initial reads on all items in the corresponding topic. If the topic is opened and no item is advised, the value of the READCOMPLETE item is 0. After all activated items have been read once, the READCOMPLETE item changes to 1. If at least one item could not be read the READCOMPLETE item alters to –1 indicating there have been read errors.
46 Wonderware Siemens SIMATIC NET S7 I/O Server Monitoring the Status of Communications with a PLC For each topic name (PLC), there is a built-in discrete item that can be used to monitor the status of communications with the PLC. The discrete item, Status, is set to 0 when communication with the PLC fails and is set to 1 when communication is successful.
Reading Values from the I/O Server into Excel 47 Reading Values from the I/O Server into Excel Values may be read directly into Excel spreadsheets from the server by entering a DDE formula into a cell using the following format: =applicationname|topicname!itemname Example formula: =S7|S7PLC400!EW4 where: S7 Is the name of the server application. S7PLC400 Is the exact topic name defined in the server for the PLC. EW4 Is the actual location in the PLC that contains the data value.
48 Wonderware Siemens SIMATIC NET S7 I/O Server Writing Values to the I/O Server from Excel Values may be written to the server from Microsoft Excel by creating an Excel macro that uses the POKE command.
Troubleshooting I/O Server Communication Problems 49 Troubleshooting I/O Server Communication Problems This section provides you with some simple steps that can be taken to ascertain and correct communication problems. The problems described here represent the most probable causes of communication failure. Note This is a general troubleshooting guide and for the sake of brevity we cannot cover every possible source of communication problems.
50 Wonderware Siemens SIMATIC NET S7 I/O Server The information in the second line indicates that you have at least one I/O type tagname defined in your Tagname Dictionary that is associated with an Access Name that defines OMRONFO as the Application Name, and HLPLC as the Topic Name. Make note of exactly how the application and topic names are spelled. 8 This example only applies when using a version of InTouch prior to InTouch 7.0.
Troubleshooting I/O Server Communication Problems 51 5. If the topic name is different, either correct it in the server or switch to WindowMaker and correct it in the Access Name definition. 6. Once you performed the above procedure, restart WindowViewer and switch to the server program. Data should now appear in the server’s program window to indicate that WindowViewer and the server are communicating.
52 Wonderware Siemens SIMATIC NET S7 I/O Server Debugging Communication Between an I/O Server and a PLC This section provides you with simple steps to diagnose and correct server to PLC communication problems. The debug techniques listed below address both serial and board servers. Disregard any information that is not applicable to the server type that you are using.
Troubleshooting I/O Server Communication Problems 53 8 Also, if you are using an AT type computer, two devices cannot share interrupts. Verify that the communication port you are using has a unique interrupt setting. 2. On Windows 3.1 or Windows for Workgroups, start the Terminal program. On Windows 95 or Windows NT, start the HyperTerminal program. 3.
54 Wonderware Siemens SIMATIC NET S7 I/O Server 2. If you are running Windows for Workgroups (version 3.1 or later), download SERIAL.386 (this fixes a Microsoft bug) from the Wonderware Bulletin Board system (949-727-0726) or from the Wonderware WEB site at: http://wondertech.wonderware.com. 8 The size of this file is 10620 bytes, has a date of 2/17/94, and is a selfextracting zip file called wg1001.exe. It’s located in the "PatchFix Library" on the Wonderware BBS in the File Transfers / Patchfix area.
Troubleshooting I/O Server Communication Problems 55 Ø If you are using the Windows 95 operating system, verify the following: 1. Click Start on the Windows taskbar. Point to Settings, then click Control Panel in the menu. The Control Panel dialog box will appear. 2. Double-click the System icon. The System Properties dialog box will appear. Click the Device Manager tab and select the COM port that you are using for the server. For example: 3. Click Properties. The Properties dialog box will appear.
56 Wonderware Siemens SIMATIC NET S7 I/O Server 4. Click Advanced. The Advanced Port Settings dialog box appears: 5. Lowering the default Receive Buffer and Transmit Buffer settings to their minimum may solve I/O communication problems for portable computers (notebook or laptops) and framing errors for standard computers. 6. If using a 16550 UART chip, select the Use FIFO buffers (requires 16550 compatible UART) option. If you are not using a UART chip, make sure this option is not selected.
Troubleshooting I/O Server Communication Problems 57 Ø How long is your RS-232 cable? Fifteen meters (fifty feet) is the maximum practical length for the RS-232 standard. Ø Try using a different COM port for the I/O Server. Ø If you are installing an I/O Server or configuring a board-based I/O Server on a computer running on the Windows NT operating system, log on with Administrator privileges.
58 Wonderware Siemens SIMATIC NET S7 I/O Server Ø Increase the Reply Timeout setting in the I/O Server to a value between 5 and 10 seconds. Not allowing the PLC or field device enough time to respond to the server’s request for data may result in communication errors. Ø Verify the PLC is properly configured and the cable is good by using the programming software for the PLC. 1. Connect to the PLC with the programming software. The connection must be through the same port and cable.
Troubleshooting I/O Server Communication Problems 59 2. The computer can not use an OEM (Original Equipment Manufacturer) version of Microsoft Windows. We highly recommend using only a Microsoft Windows product. Contact your vendor to determine if installing an off-the-shelf copy of Microsoft Windows will cause any problems. Ø If you feel you have tested all possible situations that may be causing your failed I/O communications, contact your local Wonderware distributor for technical support.
60 Wonderware Siemens SIMATIC NET S7 I/O Server Special Wonderware Logger Messages The following messages may appear in the Wonderware Logger. They can be very useful in debugging communication problems. Ø The following logger messages can occur in error situations if log errors (default) is selected in the logger settings. • ERROR: poking item: - () Writing a value to an item failed.
Special Wonderware Logger Messages 61 Your configured CP/VFD couldn’t be initialised. Goto “Setting the PG-PC interface” for diagnostics. • ERROR(): s7_get_initiate_cnf (cpd= cref= ) [() ] The initialization of the configured connection failed. Check the errorcode in your Siemens manuals and whether your remote PLC is available.
62 Wonderware Siemens SIMATIC NET S7 I/O Server • Write complete (OK) - item: - on: The write operation was completed successfully on the protocol. The PLC has confirmed the reception of data. • TRACE: : can't find message -> discarding it (cpd=,cref=,orderid= There’s no database for the received data. Discarding the message. This may occur when items have been deactivated.
Special Wonderware Logger Messages 63 For example: PROTOCOL: s7_get_cycl_read_ind dumping read values DB222,B0,6: result=255, value=0x000000000000, var_length=6 DB222,B1330,12: result=255, value=0x000000000000000000000000, var_length=12 DB222,B1342,2: result=255, value=0x0000, var_length=2 DB222,B1270,14: result=255, value=0x0004570000000000000000000000, var_length=14 DB222,B1290,14: result=255, value=0x0002034875023467000000000000, var_length=14 DB222,B1310,14: result=255, value=0x00000120000000000000000
64 Wonderware Siemens SIMATIC NET S7 I/O Server
