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MODBUS Master/Slave Communication Server (TCP

1. r Coil Register Address Field Standard C Adjusted in File File Name Browse 3 m Wwatchdog Time Interval i ine ealta j0 Multiple Write Command J Address to Write 7i 6 Digit Addressing E Value to write 0 Mask Write Hold Reg I Cancel u 3 Enter the Topic Name Note If using InTouch the same Topic Name is to be entered in the Add Access Name dialog box described in the Using the MODBUS Server with InTouch section 3 Select communication type Serial or Ethernet Depending on selected Serial Communication Port or Socket state topic can be Master topic or Slave topic if topic is associated with Slave Communication Port or with Slave status Socket then topic is used as a Slave topic otherwise topic is used as a Master topic Correspondingly the availability of entries on Modbus Topic Definition dialog box can considerably change For example for Slave topic the Update Interval field will change to Wait Timeout field see below If Serial communication is selected then click on the Com Port combo box to associate a topic with some of 32 COM ports available MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 21 Note Additional topics may be associated with the same communication port later In ca
2. ccccccccee 38 Using MODBUS with OPCLink Server yaseso csdecsccateeet aateeptece ties cat eaeneie tibet tetas 38 OPCLINK FOpIC Definitio Missen a AS 38 Accessing MODBUS Items via the OPCLink Servet cceeeeeeeeeeeeeeeeeeeeeeeees 39 Using the MODBUS Server with Suite Link and DDE Clients ceeeeeeeeteeeeeetees 41 Using the MODBUS Server with INTOUCh ssssseseeessennnneesseeeenrnrnrnsssertnrnnnnnnneeerrrnnn nnne 41 Defining the Access Nate Size xasteg cect pags Suss vias Suess ies sua eoens testes e ue sGkas eg obees teteeene east 41 Defining the Tag GINS vac lt satseiesssetnchedcnpenhepsdehadebed chetgaeepeiedanhassedeepennedansectedeepeecebeepied 43 Monitoring the Status of Communication with INTOUCH cccccccccccceceecceeeeeeeeeeeeees 45 Notes on Using Microsoft Excel 0 cccccccceccceeeeeeeeeeeeeeeaeeeeeeeeeeeeesescaaeeeeeeeeeeeeeseeeeaaaees 46 Reading Values into Excel Spreadsheets eeccecseccccceeeeeeeeeeeeaaeeeeeeeeeeeeeeeeeaaeees 46 Writing Values to MODBUS MASTER SLAVE Points 2 seeceeeeeeeeeeeeeeeteeeeeeeees 46 Troubleshooting tac2 a etstined sb Sabededpaeceachs Ueda hemes cbehyeneldateh hs debebiaesehybadedohsbetetedyeehdadehnedelehed 48 WIN IN eNi E S cecte eat atet tit tat ar Stat ah a iho Bos Seth es oar 48 Troubleshooting MEnU f ios fesse de cece costes Secccesn ses taids oe cstedc cena tale dosctenedpntanet oactace oe dents 50 lMternal MO
3. 17 By checking or un checking the Mask Write Hold Reg checkbox select whether to use the Modbus Function 22 0x16 in hex Mask Write Register to set or clear individual bits in Holding Registers This function is applicable for individual bits in registers see Item Names section below in this manual By using this function the performance can be greatly increased in case there are many bit writes executed at time If Mask Write Hold Reg is not selected each bit in register write is executed in two steps Modbus Server at first reads a register 16 bit word containing this bit from device to get the current bit value then Server puts the bit value into this 16 bit word and writes this 16 bit word back to device Note Before using the Mask Write to Holding Registers check if connected Modbus device supports this function Update Interval for Multiple Topics The MODBUS Server supports the possibility to enter the new Update Interval value for multiple Topics in a single operation At first these multiple Topics must be selected in the Topic Definition dialog box by holding the CTRL key while clicking on the selected ones nodel2 node15 New node3 Modify Delete Update Interval Then click on Update Interval The UPDATE INTERVAL dialog box will appear UPDATE INTERYAL x r Change Update Interval for Selected fi 000 milisecond s bai Cancel MODBUS MAST
4. message appears start MODBUS MASTER SLAVE Server and check if Software key or HASP HL key not found message does not appear then it means everything is done correctly and MODBUS MASTER SLAVE Server runs in full mode with licensing by HASP HL key enabled Software license key MODBUS MASTER SLAVE Server supports the computer dependent software licensing The following steps are required to enable it 1 Start MODBUS MASTER SLAVE Server click on Help menu item also short cut Alt H can be used and pop up menu with Help menu commands will appear Contents How to Use Help License About Modbus Select License and License dialog will appear x Product Code DA38010 158 Customer PC Code 4a0f 0675 7485 ca93 Transfer Software Key Cancel 2 Here the Customer PC Code is computer dependent string generated by MODBUS MASTER SLAVE Server and it is unique for this computer Write it down or Copy Paste to e mail when ordering the MODBUS MASTER SLAVE Server MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 8 3 After purchasing the MODBUS MASTER SLAVE Server you will get the software license key 16 character alphanumeric string Open the License dialog again and Copy Paste it to Software Key field xi Product Cod
5. To define additional tagnames click on the New button To return to the WindowMaker main screen select Close Monitoring the Status of Communication with InTouch InTouch supports built in topic names called DDEStatus and lOStatus which are used to monitor the status of communication between the Server and InTouch For more information on the built in topic names DDEStatus and OStatus see your online InTouch User s Guide The status of communication between the Server and InTouch can be read into Excel by entering the following DDE reference formula in a cell on a spreadsheet in following examples NODE1 is the Topic Name configured for MODBUS MASTER SLAVE Server view DDEStatus NODE1 or view lOStatus NODE1 MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 46 Notes on Using Microsoft Excel Data from MODBUS MASTER SLAVE topics nodes may be accessed from Excel spreadsheets To do so enter a formula like the following into a cell on the spreadsheet MODBUS topic item Sometimes Excel requires the topic and or item to be surrounded by apostrophes In the formula topic must be replaced with one of the valid topic names defined during the Server configuration process Replace item with one of the valid item names described in the Item Names section Reading Values into Excel Spreadsheets Values may b
6. in case communicating directly with device supporting Modbus TCP protocol without CRC Cyclical Redundancy Checksum included Serial Ethernet TCP protocol in case serial device is accessed via serial TCP Ethernet converter or GPRS modenm in this option the 6 bytes header is not included in TCP IP packet CRC is included it is suitable for GPRS communication by using serial TCP direct conversion at serial device side TCP Modbus IP CRC protocol in case serial device is accessed via GPRS modem or serial TCP Ethernet converter with embedded application running on it in this option both the 6 bytes header and CRC are included in TCP IP packets The Serial Ethernet TCP protocol and specially the TCP Modbus IP CRC protocol are suitable for GPRS communication by using Klinkmann GPRS application running on GPRS modem at serial device side Important Note It is highly recommended do not use more than 64 Sockets TCP connections in case using Modbus Server TCP Server version for GPRS communications Network Status Two Network Status modes Server behavior in the Modbus network during Ethernet communication are available Master status Modbus Server acts as a Modbus Master polls data from remote device Slave status Modbus Server acts as a Modbus Slave waits for read or write Modbus commands from remote Modbus Master and replies with corresponding Modbus protocol responses MODBUS MASTER SLAVE Serial amp E
7. Allow Access permission must be configured for SYSTEM and for all users which need access to the MODBUS OPC amp DDE Server Security launch permissions Allow Launch must be specified for each user which launches OPC Client on local machine Typically specify Allow Launch for Users group If is necessary to access MODBUS OPC amp DDE Server from local OPC Clients configured as Services then Allow Launch permission must be configured for SYSTEM also Security configuration permissions Administrators Full Control CREATOR OWNER Full Control SYSTEM Full Control Full Control for all users which have permission to register MODBUS OPC amp DDE Server as OPC server For users which have permission to read data from OPC server the sufficient permission is Read Note OPC server registration and unregistration is silent No error messages are displayed if operation is unavailable due to permission restrictions MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 36 Identify Identify has to be The launching user In case of using MODBUS OPC amp DDE Server as local OPC server the Identify can be also The interactive user but this setting will not work if user is not logged on and OPC Clients which are running as Services will not be able to connect to MODBUS OPC amp DDE Server while user is not logged
8. Foundation the current specification is 2 05a dated June 2002 3 00 dated March 2003 The OPC support for MODBUS MASTER SLAVE Server OPC amp DDE version is implemented based on FactorySoft OPC Server Development Toolkit and it conforms to OPC Data Access Custom Interface Specification 2 04 The MODBUS MASTER SLAVE Server OPC amp DDE version is tested for compliance and is compatible with OPC Foundation OPC Data Access Compliance Test Tool The Suite Link FastDDE Version 3 and DDE support for MODBUS MASTER SLAVE Communication Server is implemented by Wonderware I O Server Toolkit ver 7 2 1 6 MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 3 The FastDDE Version 2 and DDE support for MODBUS Server OPC amp DDE version is implemented by Wonderware I O Server Toolkit ver 5 0 008 Accessing Remote Items via the Server The communication protocol addresses an element of data in a conversation that uses a three part naming convention that includes the application name topic name and item name The following briefly describes each portion of this naming convention application name The name of the Windows program server that will be accessing the data element In the case of data coming from or going to a MODBUS node via this Server the application portion of the address is MODBUS topic
9. Names Add Modify Delete MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 45 Select the appropriate Access Name and click on Close If the Access Name has not been defined as previously described click on Add and define the Access Name now The Details dialog box will appear displaying the selected Access Name Initial Value fo Min EU 32768 Mas EU 132767 Deadband jo Min Raw 32769 Max Raw 32767 M Conversion Eng Units alias nial Linear i NODE C Square Root ltem Use Tagname as ltem Name fide seer fo For integers fill in the Min EU Max EU Min Raw and Max Raw fields These fields control the range of values which will be accepted from the Server and how the values are scaled If no scaling is desired Min EU should be equal to Min Raw and Max EU equal to Max Raw Enter a MODBUS item name to be associated with this tagname in the Item field in the Details box Initial Value fo Min EU jo Mag EU 65535 Deadband jo Min Raw Io Max Raw 65535 Conversion Eng Units Ana aoee Linear i i NODE 2 Square Root ltem ao 00 M Use Tagname as ltem Name lesen fo Refer to the Item Names section below for complete details Once all entries have been made click on the Save button in the top dialog box to accept the new tagname
10. containing the data value For itemname use some of the valid item names specified like described in the Item Names section MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 47 TERMINATE channel Closes the channel at the end of the macro Some applications have a limited number of channels Therefore they should be closed when finished Channel is the channel number returned by the previously executed INITIATE function RETURN Marks the end of the macro The following is an example of Excel macro used to poke value from cell B2 to topic NODE 1item 40100 PokeMacro Ctrl a INITIATE MODBUS NODE1 POKE A2 40100 B2 ON TIME NOW 0 01 TerminateDDEChannel RETURN TerminateDDEChannel TERMINATE A2 RETURN Note Refer to the Microsoft Excel manual for complete details on entering Remote Reference formulas for cells MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 48 Troubleshooting WIN INI entries The first time you run the MODBUS MASTER SLAVE Server configuration most of the items in the following list will automatically appear in the WIN INI file located in the MS Windows system directory e g C WINNT or C Win95 It is an ASCII file and can be altere
11. creates additional separate message if exception_status item is active This message is sent to PLC with Topic update interval MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 30 Modbus Function 8 Diagnostics Support Modbus function code 8 provides a series of tests of checking the communication system between a client device if using Modbus Server it is a Server itself and a slave device e g PLC The following explains the item naming supported by Modbus Server to control Modbus function 8 processing Important Function 8 is supported only in serial communication and only with Master ports 1 Sub functions for PLC control The following sub functions are supported 00 0 dec Return Query Data 01 1 dec Restart Communications Option 04 4 dec Force Listen Only Mode OA 10 dec Clear Counters and Diagnostic Register 14 20 dec Clear Overrun Counter and Flag Important The sub function code in item point names described below must be in decimal format for example DIAG10 not DIAGOA To control the sub function execution three I O items can be created in client application e g InTouch for each sub function DIAGxx I O Discrete Mandatory used When application changes value from 0 to 1 then it causes execution of command with sub code xx To repeat the command execution client app
12. data values delivered to VTQ aware clients Extensive diagnostics of the data throughput server loading computer resource consumption and network transport are made accessible through the Microsoft Windows NT operating system Performance Monitor This feature is critical for the scheme and maintenance of distributed industrial networks Consistent high data volumes can be maintained between applications regardless if the applications are on a single node or distributed over a large node count The network transport protocol is TCP IP using Microsofts standard WinSock interface OPC OLE for Process Control is an open interface standard to provide data from a data source and communicate the data to any client application in a common standard way The OPC is based on Microsoft OLE COM and DCOM technologies and enables simple and standardized data interchange between the industrial or office sector and the production sector From general point of view many aspects of OPC are similar to DDE but main difference is in the implementation by using Microsoft s COM Component Object Model technology It enables fast exchange with process automation data and OPC open interface allows access to data from OPC Server in same standard way from OPC client applications supplied by different developers For more information on the basics of OPC please refer to the OPC Specification The OPC Data Access Custom Interface Specification is maintained by OPC
13. files This Feature requires OKB on your hard drive It has 0 of 1 subfeatures selected The subfeatures require OKB on your hard drive Reset Disk Usage Back Cancel When installation is finished the subdirectory specified as a folder where to install the MODBUS MASTER SLAVE Server files will contain the following files MODBUS EXE The MODBUS MASTER SLAVE Server Program This is a Microsoft Windows 32 bit application program MODBUS CHM The MODBUS Server Help file MODBUS CFG An example configuration file MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 6 LICENSE RTF Klinkmann Automation software license file KLSERVER DLL Dynamic Link Library necessary for OPC amp DDE version of the Server WWDLG32 DLL Dynamic Link Library necessary only for OPC amp DDE version of the Server TCPWORK DLL Dynamic Link Library necessary for Ethernet communication hasp_windows_ 44 Dynamic Link Library installed only if HASP Files is selected 42 dll during the installation in Custom Setup dialog haspdinst exe Sentinel LDK Run time Environment Installer HASP HL Runtime Package copied to the Server folder only if HASP Device driver is selected during the installation in Custom Setup dialog In case the HASP Device driver is selected during the
14. installation in Custom Setup dialog the Sentinel LDK Run time Environment HASP HL Runtime Package is installed during the MODBUS MASTER SLAVE Server installation and will be uninstalled during the MODBUS MASTER SLAVE Server uninstallation The presence of Sentinel LDK Run time Environment can be checked after the Server installation by looking up in Control Panel Administrative Tools Services the Service Sentinel Local License Manager must be started Notes 1 The MODBUS MASTER SLAVE Server is developed with Wonderware I O Server Toolkit ver 7 2 1 6 and needs the Wonderware FS 2000 Common Components to be installed on computer where MODBUS MASTER SLAVE Server is running If using Wonderware InTouch 8 0 or newer install the FS 2000 Common Components before installing InTouch see also Wonderware Tech Notes 404 and 313 2 If MODBUS MASTER SLAVE Server Suite Link amp DDE version will run on PC where Wonderware FS2000 Common Components are not installed then a special I O Server Infrastructure installation package can be obtained from Klinkmann Automation see Installing the I O Server Infrastructure section below This I O Server Infrastructure installation package contains the minimum set of software needed to run the MODBUS MASTER SLAVE Server Suite Link amp DDE version and these infrastructure files must be installed prior to executing the Server The I O Server Infrastructure does not support using MODBU
15. local OPC Server but some DCOM Distributed COM configuration is required before accessing the remote OPC Server The DCOM configuration must be done both on OPC Server and OPC Client computers MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 35 Configuring DCOM After MODBUS Server OPC amp DDE version installation the System Administrator must configure DCOM by DCOM configuration program by Dcomcnfg exe or Dcomcnfg32 exe for Win9x system tool This utility is located in the Windows system directory e g in WinNT system32 or Win9x system After starting Dcomcnfg exe select MODBUS OPC amp DDE Server on Applications page and click on Properties the MODBUS OPC amp DDE Server Properties window will appear All further configuration is to be done from there Configuring DCOM to access MODBUS Server as a local OPC Server To access MODBUS OPC amp DDE Server as a local OPC server Authentication level can be any of None Call Connect Default Packet Packet Integrity Packet Privacy Location Run application on this computer must be checked Security access permissions default access permissions can be used in case using MODBUS OPC amp DDE Server as local OPC server If it is necessary to access MODBUS OPC amp DDE Server from local OPC Clients configured as services then
16. of consecutive error retries for one topic Node If after SlowPollRetries there is still no successful response from MODBUS node then this topic is set to slow poll mode The WIN INI file SlowPollinterval entry is used to enter the slow poll mode update interval in seconds The default values they are used if WIN INI file does not contain these entries are SlowPollRetries equal to 3 and SlowPollinterval equal to 60 seconds For example the following entries can be used to specify that slow poll mode 2 minutes will start after 5 consecutive unsuccessful retries SlowPollRetries 5 SlowPolllnterval 120 Entering the slow poll mode is reported to WWLogger by following string Set slow poll mode poll after each lt SlowPollinterval 1000 gt msecs Stop error logging to Topic lt TOPICNAME gt Leaving the slow poll mode is reported to WWLogger by following string Port lt PORTNAME gt return to normal communication to Topic lt TOPICNAME gt The WriteRetrylndefinitely entry is used to disable the deleting of pending write messages when slow poll mode is started As default no WriteRetrylndefinitely entry in WIN INI or WriteRetrylndefinitely 0 all write messages for this topic are deleted when topic enters the slow poll mode To disable this the following entry can be used WriteRetryIndefinitely 1 Note Be careful when using this setting if PLC is switched off but client application continues to generate new values to be wr
17. on computer Also This user can be selected In this case MODBUS OPC amp DDE Server will be invisible on the screen and MODBUS OPC amp DDE Server user interface will be inaccessible If user is different as user logged on then MODBUS OPC amp DDE Server cannot be terminated by Task Manager The user specified in this setting can be any user which have access to hardware and software resources used by MODBUS OPC amp DDE Server This user can be without permission to launch or configure MODBUS OPC amp DDE Server specified in the Security page of DCOM configuration program Configuring DCOM to access MODBUS Server as a remote OPC Server To access MODBUS OPC amp DDE Server as a remote OPC server form remote computer and to browse available OPC Servers at first you have to configure DCOM settings for OPCEnum exe both on server and client computers The OPCEnum exe opccomn_ps dll and OPCProxy dll must be installed and registered on both server and client computers and MODBUS OPC amp DDE Server must be installed and registered on computer where it will run For some OPC clients it may be necessary to register MODBUS OPC amp DDE Server on client computer OPCEnum OPCEnum is used to browse OPC servers on local or remote computer the DCOM settings for OPCEnum exe are following Location Run application on this computer must be checked on both computers Security access permissions can be default Security launch permission
18. performed Note If this is the first time either Communication Port or Socket have been configured the user will be prompted to save configuration to an existing directory MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 19 Topic Definition Command The user provides each MODBUS device with an arbitrary name that is used as the Topic Name for all references to this device The following steps are taken to define the Topic attached to a device on MODBUS bus 1 Invoke the Configure Topic Definition command The Topic definition dialog box will appear Topic definition Topics Modify Delete Update Interval 2 To modify an existing topic select the topic name and click on Modify To define a new topic click on New The MODBUS Topic Definition dialog box will appear MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 20 Topic Name nodet r Communication Type Serial C Ethemet Com Pott com PLC Station Number fi Reply Timeout sec 3 00 Update Interval 1000 milliseconds gt rm Block 1 0 Sizes Coil Read 2000 Register Read 125 Coil Write fi 28 Register write j oo Maximum Message Lenath 255
19. privileges MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 38 Running MODBUS OPC amp DDE version as Windows NT Service To install MODBUS Server OPC amp DDE version to run as Windows NT Service the MODBUS Server must be started with command line parameter Service MODBUS Service After this the MODBUS OPC amp DDE Server NT Service will be installed with Startup type Manual The Service Startup configuration can be changed by MS Windows NT Control Panel Services configuration dialog boxes The Allow Service to Interact with Desktop checkbox in Service dialog box must be checked the Service dialog box can be invoked by pressing the Startup button on Services dialog box when Service MODBUS OPC amp DDE Server is selected If Allow Service to Interact with Desktop is not selected then MODBUS Server full functionality is not ensured e g the Server configuration can not be changed no message boxes will be displayed etc To use MODBUS Server OPC amp DDE version as Windows NT Service you may need to configure DCOM For details of configuring DCOM refer to Configuring DCOM section of this manual If MODBUS OPC amp DDE Server NT Service will be accessed only from local OPC clients i e MODBUS Server will not be used as a remote OPC Server then custom access and launch perm
20. section of this manual 2 The Service Startup configuration can be changed by MS Windows NT Control Panel Services configuration dialogs The Allow Service to Interact with Desktop checkbox in Service dialog box must be checked the Service dialog box can be invoked by pressing the Startup button on Services dialog box when Service MODBUS_lOServer is selected If Allow Service to Interact with Desktop is not selected then MODBUS Server full functionality is not ensured e g the Server configuration can not be changed no message boxes will be displayed etc Once all entries have been made click on OK Com Port Settings Command This command is used to configure the communication port that will be used to communicate with MODBUS bus Invoke the Configure Com Port Settings command The Communication Port Settings dialog box will appear Communication Port Settings Master Slave g Com Port fcom1 E e Master Slave r Baud Rate C 110 C 300 600 C 1200 C 2400 4800 9600 C 14400 f 19200 38400 C 57600 115200 Parity Data Bits Stop Bits r C7 amp 8 O s s s None None RTS CTS Standard C Reversed Save f Cancel Select the Com Port and examine the characteristics of the selected Port To select a necessary Com Port click on the combo box button and make your choice from the list box Handshaking CAC Bytes order in command MODBUS MASTER SLAVE Ser
21. time by one read command Register Read option Valid values are between 0 and 125 If Register Read setting is set to zero then this operation will not be available for selected Topic 11 Enter the maximum number of consecutive registers that can be written at time by one write command Register Write option Valid values can be between 0 and 100 If MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 24 Register Write settiing is set to zero then this operation wil not be available for selected Topic This option is not relevant in case Multiple Write Command is selected Note To process multiple registers writing in one command the WIN INI entry MultiWrite see chapter WIN INI entries must be equal to 1 or 2 and Register Write option for corresponding Topic must be configured in MODBUS Topic Definition dialog box greater than 1 If Register Write option is equal to 1 then multiple registers writing for corresponding Topic is not processed despite of WIN INI entry MultiWrite value Note The default Coil Read Coil Write Register Read and Register Write settings are optimal from Modbus Server performance point of view Reduce these default settings only if you suppose that number of data to be processed in one request is too great and the PLC remote Modbus device cannot process such data quantity in satisfactory
22. to get Diagnostic Register contents sub function 02 create and poll the I O item DATAO2 The value of DATA02 will be the current contents of Diagnostic Register Notes on Data Processing in Slave Mode If topic is attached to the slave port or socket Slave option selected in Communication Port Settings dialog box see Com Port Settings Command section above in this manual or Slave Network Status option selected in Modbus Socket Settings dialog box see Socket Settings Command section above in this manual then this topic acts as a MODBUS slave device It means the Server does not poll data and does not transfer write commands to the PLC The Server only waits for requests from master PLC and answers to these requests MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 32 To provide data for master PLC the client application must create and activate items for Modbus Server and assign initial values to items Initial values may be assigned also by master PLC by using write commands 05 06 15 or 16 In case master PLC requests data for items without initial values assigned by client application the zero 0 value is provided to Master PLC So to get item s value from MODBUS master node PLC the client application must activate an item and wait until MODBUS master node pokes correspondin
23. used to enter the contents of string which must be sent as a first data from remote device PLC to Modbus Server and is used by Modbus Server to identify which of remote devices PLCs is connecting considering that IP Address and IP Port of remote device PLC can be unknown for example if connecting via public GPRS network This string can contain up to 11 ASCII characters Recommended practice would be to include the remote device PLC Station Number here for example if PLC Station Number is 1 then in ID String value can be 1 Each time when DDE SuiteLink OPC client application activates communication with some Modbus Server topic associated with Master Socket the Protocol type Serial Ethernet TCP is selected and ID String is not empty then Modbus Server creates a Socket and waits for Ethernet connection from remote device PLC After ID String is received from remote device PLC Modbus Server accepts connection and communication between Modbus Server and remote device PLC can start Note The ID String can be used only with devices connections supporting possibilities to send non Modbus data for example if some programmable GPRS modem e g Siemens TC65T is connected to remote device PLC Once all entries have been made click on OK to process the configuration for the Socket The Socket Settings dialog box will appear again Click on Done when configuration for all Sockets has been
24. values may be written into the PLC memory simultaneously even if the client application changes them step by step In this case the writing speed can be seriously increased For example the client application sequentially changes the values of following 100 items 40001 40002 40100 and the values of following 100 items 00001 00002 00100 In this case the Server creates only two write messages to write the new values for all the changed items If the values of the same Items are changed in the following sequence 40001 00001 40002 00002 40003 then Server creates a separate write message for the each new write value MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 49 3 If MultiWrite 2 then the Server tries to include the new write value into the some of previously created messages ignoring the sequence of data changing in the client application Important If MultiWrite 2 then maximum writing speed is achieved but this option is not recommended if data changing sequence is important for PLC program The MultiWrite entry is relevant only in case of Master Topic when Write command type is configured as Multiple Write Command MODBUS Topic Definition dialog box in chapter Topic Definition Command SlowPollRetries and SlowPolllnterval The SlowPollRetries entry is used to enter the number
25. DE and FastDDE Version 2 formats are still supported providing full backward compatibility with older DDE clients FastDDE Version 3 works on Windows 9x systems as well as Windows NT systems MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 2 NetDDE extends the standard Windows DDE functionality to include communication over local area networks and through serial ports Network extensions are available to allow DDE links between applications running on different computers connected via networks or modems For example NetDDE supports DDE between applications running on IBM compatible computers connected via LAN or modem and DDE aware applications running on non PC based platforms under operating environments such as VMS and UNIX SuiteLink uses a TCP IP based protocol and is designed by Wonderware 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 or higher 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 SuiteLink was designed to be the industrial data network distribution standard and provides the following features Value Time Quality VTQ places a time stamp and quality indicator on all
26. DK Run time Environment HASP HL Runtime Package This feature requires 15MB on your hard drive Location C Program Files Klinkmann Automation Modbus Client Browse SL and DDE Server Reset Disk Usage Back Cancel MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 5 Note In case the SafeNet Sentinel LDK Run time Environment HASP HL Runtime Package is already installed on your computer separately or by some other software then it can be disabled j Modbus Client SL and DDE Server Setup j joj xj Select the way you want features to be installed Click the icons in the tree below to change the way features will be installed Sentinel LDK Run time Environment HASP Files HASP HL Runtime Package This feature requires OKB on your hard drive Reset Disk Usage Back Cancel In case HASP Device driver and HASP files are not selected then HASP USB key will not be supported and only the software license will be available files needed for HASP USB key will not be installed i Modbus Client SL and DDE Server Setup I 5 xj Select the way you want features to be installed Click the icons in the tree below to change the way features will be installed X v HASP Device driver Se A EHASP Files Klinkmann HASP
27. ER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 27 Enter the new value in the Update Interval field and select the appropriate time measuring units milliseconds seconds minutes or hours UPDATE INTERYAL x m Change Update Interval for Selected T opic s 2 second s Ra second s hour s Click on OK to change the Update Interval value for all selected Topics or click on Cancel The Topic Definition dialog box will appear again The Update Interval can be changed also at run time for each Topic separately not for several ones at once after Topic is activated by client application see description of UPDATEINTERVAL item in chapter Monitoring and Controlling Communication with MODBUS Bus Select Done when configuration for all Topics has been performed MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 28 Item Names Within the MODBUS MASTER SLAVE Server the standard MODICON MODBUS protocol item point naming is used In general the point name consists of 5 or 6 digits depending of 6 Digit Addressing selection in Modbus Topic definition dialog box for standard memory areas indication there are four standard memory areas supported and 6 digits only for
28. ER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 39 Topic Name Enter a unique name e g PLC1 for the PLC in this field If using InTouch then same Topic Name is to be entered in the Add Access Name dialog box when defining the Access Names for OPCLink Server in InTouch WindowMaker OPC Server Name Select the name of the OPC server MODBUS OPC_ Server that will be used by this topic The list box shows the registered OPC servers in the system OPC Path Enter the name of the OPC path e g node2 used by this topic This OPC path is the first part of a full OPC item name string common to all items that will be used in this topic The available OPC paths for MODBUS Server can be obtained by clicking on Browse button this allows to view the MODBUS Server s exposed address space Update Interval Enter the frequency in milliseconds that the server will acquire data for the items points associated with this topic If 0 zero is entered here OPCLink will not gather data from MODBUS Server Browse Clicking on this button initiates the browsing through exposed address space of MODBUS Server All currently available item point names including data area names and range of addresses and names of pre defined additional items will appear on Browse OPC items window in alphabetical order Accessing MODBUS Items via the O
29. Extended memory register indication Memory area ltem Point addresses Access 5 digits 6 digits Binary outputs and binary 00001 09999 000001 065535 Read memories coils Write Binary discrete inputs 10001 19999 100001 165535 pee n y Register outputs and 40001 65000 400001 465535 Read register memories holding Write registers Input registers 30001 39999 300001 365535 aoa n y Extended Memory Registers 600001 69xxxx fhe rite Leading zeroes cannot be excluded in item name Read Write if item belongs to Slave topic Within standard memory areas the first digit states the memory area the point belongs to The rest four digits are the point address in the memory area Within Extended memory registers addresses are assigned as follows File Range 600001 610000 610001 620000 620001 630000 630001 640000 640001 650000 650001 660000 660001 670000 670001 680000 680001 690000 10 690001 69xxxx The binary items are 1 bit long value range is 0 or 1 For register items the MODBUS Master Slave Server supports several data formats The following presents supported data formats and special item naming conventions indicating corresponding format Unsigned Signed Format Generally register items are 16 bits long The server interprets 16 bit word in a PLC in 16 bit unsigned format value range
30. GQQGM setae ted civeimcadnereudececcewde dct iets cet inds duet tocatuat ends a A tadesaetvedidiad tats 51 MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 1 MODBUS MASTER SLAVE Serial and Ethernet Communication Server Overview The MODBUS MASTER SLAVE Serial and Ethernet Communication Server hereafter referred to as the MODBUS MASTER SLAVE Server or MODBUS Server or MODBUS or Server is a Microsoft Windows 32 bit application program that acts as a communication protocol Server and allows other Windows application programs access to data from MODBUS network using the RS 232 serial and or TCP IP interface The Server can act either as a MODBUS master device or a MODBUS slave device Any Microsoft Windows program that is capable of acting as a DDE FastDDE SuiteLink or OPC Client may use the MODBUS MASTER SLAVE Server There are two different MODBUS Server versions described in this manual Server version ordering number DR 380 10 supporting SuiteLink FastDDE and DDE protocols this version hereafter is referred to as the Suite Link amp DDE version Server version ordering number DR 380 11 supporting OPC and DDE protocols this version hereafter is referred to as the OPC amp DDE version The separate installation package is supplied for each version of the Server In all cases
31. MODBUS MASTER SLAVE Serial and Ethernet Communication Server TCP Server version for Microsoft Windows and InTouch Applications User Manual Ver 1 x Rev 2 3 DR 380 10 DR 380 11 KLINKMANN AUTOMATION P O Box 38 FIN 00371 Helsinki Finland tel int 358 9 5404940 fax int 358 9 5413541 www klinkmann com Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server i Table Of Contents OVENI ae ea E E ne ee he eh Ne ae Neen Cee hs tak oak hehe Ae Ne thee ee 1 Communication Protocols crc lt tetsses rg r a aa aea aa aa aaa a a aaa 1 Accessing Remote Items via the Servet ceeececeecccceeeeeeeeeeeeeeeaeeeeeeeeeeeeeeesenaeaeeeeeeees 3 Installing the MODBUS MASTER SLAVE Servet cccccceeeeeeeeeeneeeeeeeeeeeeeeeeenneeeeeeees 4 Installing the Server esr s 5 Saale ta ie Nate ila tala A a hata ain alas C6 4 Uninstalling the SGIVG loc eves ved tls dees ture a a e e T AA AE 6 Licensing by using HASP HL key ssssessssesssssssssnnnnrrssserrrernnnrrsseerrrtrnnnnrneerrrrennnnnteeene 7 Software license key cccccceceeeeesseeeeceeeeeeeeeeeeseeaaeaeeeeeeeeeeseeccaaaaeeeeeeeesesessnneeeeeeeeees 7 Transferring the software license to other COMPUTED eeeeeeeeeeeeeeeeeeeeetteeeeeeees 8 Installing the I O Server Infrastructure ccccceeeeeeeeeeeeneeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeeeenaaees 10 Configuring the MODBUS MASTER SLAVE Servet ccceeeeeeeeeeeeeeenneee
32. PCLink Server The communication protocol addresses an element of data in a conversation that uses a three part naming convention that includes the application name topic name and item name The following briefly describes each portion of this naming convention application name The name of the Windows program server that will be accessing the data element In the case of data coming from or going to MODBUS Server OPC amp DDE version the application portion of the address is OPCLINK topic name Meaningful names are configured to identify specific devices PLCs These names are then used as the topic name in all conversations to that device PLC This must be same name as Topic Name entered in the OPCLink Topic Definition dialog box for example PLC2 Note You can define multiple topic names for the same PLC to poll different points at different rates item name A specific data element within the specified topic The OPCLink Server item syntax follows the following rules The item names must start with d discrete value MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 40 i integer value r real value m message value The item name added to the OPC path of the topic without the heading type letter must give a fully qualified OPC item name for the MODBUS Server Some examples of poss
33. S MASTER SLAVE Server as a Windows Service and remote access to MODBUS MASTER SLAVE Server when DDE SuiteLink Client is not located on same computer as MODBUS MASTER SLAVE Server Uninstalling the Server To uninstall the MODBUS MASTER SLAVE Server start Control Panel select Uninstall a program Add Remove Programs on XP 2003 and select the Modbus SL and DDE Server or Modbus OPC and DDE Server from the list of available software products MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 7 Click on Uninstall Add Remove on XP 2003 and proceed as directed by the Uninstall Wizard Licensing by using HASP HL key The following should be done to enable the licensing by HASP HL key The HASP Device driver and HASP files are selected during the MODBUS MASTER SLAVE Server installation in Custom Setup dialog that causes correspondingly haspdinst exe and hasp_windows_4442 dll files are copied to MODBUS MASTER SLAVE Server folder and Sentinel LDK Run time Environment HASP HL Runtime Package is installed and started enabling the MODBUS MASTER SLAVE Server can detect the HASP HL USB dongle insert the received HASP HL key into USB port and wait until Installing device driver software message disappears and Device driver software installed successfully
34. TAxx data item is created by application then Server processes command with Data Field value that application writes into DATAxx If DATAxx is created then Server never executes corresponding sub function until value is assigned to DATAxx 2 Sub functions for reading diagnostic information from PLC The following sub functions are supported 02 2 dec Return Diagnostic Register OB 11 dec Return Bus Message Count OC 12 dec Return Bus Communication Error Count OD 13 dec Return Bus Exception Error Count Return Slave Message Count Return Slave No Response Count 14 dec Return Slave NAK Count OE OF 15 dec 10 16 dec 11 17 dec 12 18 dec Return Slave Busy Count Return Bus Character Overrun Count To control the execution of read sub function one I O item is created in client application for each sub function DATAxx O Integer 2 bytes long value of Data Field from PLC response xx the code in decimal format of sub function To enable the Server processes the read command with sub code xx client application must activate the I O item DATAxx The corresponding command will be sent to PLC according to Topic update interval To execute diagnostic reading at different update rate a separate Topic must be created for all or several DATAxx I O items If separate Topic is used for diagnostics items the communication Status item of Topic indicates the status of command 08 execution For example
35. alog appears Select your Address file and press Open button If Address file name is entered then the Server validates only Addresses presented in the file when process current Topic The following is an example of Address file 1 3 8 107 30002 30076 40004 40023 40097 40200 This example file informs that PLC supports Coils with Addresses 00001 00003 and all Coils from 00008 to 00107 PLC does not support any Contact Valid Input registers are from 30002 to 30076 Valid Output registers are 40004 40023 as well as all registers from 40097 to 40200 Note Valid Addresses must be presented in Address file in the following way Coils are presented the first then follows Contacts then Input Registers and then Output Registers Items for monitor and control the communication with MODBUS node see chapter Monitoring and Controlling Communication with MODBUS Bus are not presented in Address file Valid Addresses in file are presented as comma separated individual MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 25 digits Addresses and or groups of Addresses Each group of valid Addresses must be presented like the following example 3 57 here Coils from 00003 to 00057 are valid Coils 00002 and 00058 should be invalid Lower Address in file cannot follow after greater Address It is not recommended to present a g
36. d manually if you wish with any text editor e g MS Windows Notepad do not use a program that formats text such as MS Word or Write unless the file is saved as a DOS text The following is a typical entry for the MODBUS MASTER SLAVE Server MODBUS Winlconic 0 WinFullScreen 0 WinTop 112 WinLeft 0 WinWidth 200 WinHeight 168 There are following additional WIN INI entries available for MODBUS MASTER SLAVE Server MultiWrite The MultiWrite entry is used to enter the data writing principles for the Server The following values can be entered 1 If MultiWrite 0 default value then for each new write value a separate write message is created Only one write message is executed per scan The values in the PLC are changed by the Server in the same sequence as they are changed in the user client application In this case the data update rate is low if application changes values very frequently 2 If MultiWrite 1 then the same message can be used for the writing of new values into the consecutive memory addresses for the same memory area for example into 40001 40002 40003 Up to 128 consecutive values can be included in the same write command depending on configured Block I O Sizes Coil Write and Register Write in the MODBUS Topic Definition dialog box see chapter Topic Definition Command The new value can be added only to the end of the last write message last message in the list of pending write messages Therefore some
37. e DR38010 158 Customer PC Code 4a0f 0675 7495 ca93 Transfer Software Key 0274 71 33 5146 e1d0 Cancel 4 Click OK and restart MODBUS MASTER SLAVE Server The MODBUS MASTER SLAVE Server software license now is enabled Note the Software Key string is saved to MS Windows WIN INI file to enable it is automatically detected at MODBUS MASTER SLAVE Server next start up Transferring the software license to other computer The transfer of Software License Key might be needed in very rare situations when it is necessary to move Klinkmann software to other computer or operation system change is planned for same computer Such transfer PERMANENTLY removes the Software License Key so be very careful when deciding to use this option The following steps are required to transfer the Software License Key 1 Start the MODBUS MASTER SLAVE Server and enable if not yet enabled the Log to File for OPC amp DDE version or Log to WWLogger option on MODBUS MASTER SLAVE Server system menu the menu that appears when you click on the Server icon in the upper left hand corner of the Server s window MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 9 Restore Move Size Minimize O Maximize X Close Alt F4 Suspend Protocol Resume Protocol Show Events Show Send Show Recei
38. e read directly into Excel spreadsheets by entering a DDE formatted formula into a cell as shown in the following examples MODBUS NODE1 40100 MODBUS MODBUS 00033 MODBUS node 30111 Note Refer to the Microsoft Excel manual for complete details on entering Remote Reference formulas for cells Writing Values to MODBUS MASTER SLAVE Points Values may be written to the Server from Microsoft Excel by creating an Excel macro that uses the POKE command The proper command is entered in Excel as follows channel INITIATE MODBUS topicname POKE channel itemname Data_Reference TERMINATE channel RETURN The following describes each of the above POKE macro statements channel INITIATE MODBUS topicname Opens a channel to a specific topic name defined in the Server in an application with name MODBUS the executable name less the EXE and assigns the number of that opened channel to channel Note By using the channel INITIATE statement the word channel must be used in the POKE statement instead of the actual cell reference The applicationname and topicname portions of the formula must be enclosed in quotation marks POKE channel itemname Data_Reference POKEs the value contained in the Data_Reference to the specified item name actual location in the MODBUS node via the channel number returned by the previously executed INITIATE function Data_Reference is the row column ID of the cell
39. e value of zero indicates that no items on this topic are updated The write commands are still executed new values written to PLC if UPDATEINTERVAL value is 0 Note By poking a value of zero to the UPDATEINTERVAL item a client can stop all update activities on the corresponding topic without having to deactivate the items MAXINTERVAL The MAXINTERVAL item is an Integer type Read Only item used to access the measured maximum update interval in milliseconds of all items for the corresponding topic for the last completed poll cycle The range of valid values is from 0 to 2147483647 milliseconds The UPDATEINTERVAL and MAXINTERVAL items can be used to tune the performance of communication ITEMCOUNT The ITEMCOUNT item is an Integer type Read Only item used to access the number of active items in the corresponding topic The range of valid values is from 0 to 2147483647 ERRORCOUNT The ERRORCOUNT item is an Integer type Read Only item used to access the number of active items with errors in the corresponding topic The range of valid values is from 0 to 2147483647 ERRORITEMS The ERRORITEMS item is an Integer type Read Write Only unique for each topic used to access the total number of items with invalid item names these items are rejected by Server The ERRORITEMS value can be reset by writing 0 to this item The range of valid values is from 0 to 2147483647 WRITECOUNT The WRITECOUNT item is an Integer type Read Only item us
40. ecuting write commands When such warnings appear then it is recommended to modify the Server timing settings or to reduce the total amount of write data in the client application Otherwise the possibility of loosing write data increases Information about suspended and resumed topics also is displayed if ShowE vents is checked Show Send if checked then all outgoing user data is displayed Show Receive if checked then all incoming user data is displayed Show Errors if checked then all information about errors is displayed ShowBadWrites if checked then Server displays information about all situations when data write commands are not executed successfully and after ConsecutiveWriteErrors retries the write is rejected and write message is deleted from list of active pending write messages This option if checked is effective even if other error logging is stopped ShowAllRejectedWrites option is useful when communication with a separate topic topics is suspended by Item SUSPEND see Item Names section and the Server rejects each write to this topic topics If checked then information about each rejected write value is reported to WWLogger and or to MODBUS Internal Logger If not checked default then Server rejects each write to suspended topic s without logging any information Verbose if checked then additional debugging information is displayed This option is useful for getting additional information about error sit
41. ed to access the number of write commands messages waiting for execution The range of valid values is from 0 to 2147483647 For example in following way the WRITECOUNT item can be used to avoid the increasing of memory occupied by not executed write commands activate the hot link with WRITECOUNT item and start to monitor it MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 34 activate new write command by poking new value only if value of WRITECOUNT becomes equal to 0 e g all previous write commands are executed and memory occupied by them is freed SUSPEND Special Read Write Discrete Item SUSPEND may be used to control the communication with a separate topic If application changes SUSPEND value from 0 to 1 then communication with topic is suspended If SUSPEND value is changed back to 0 then communication with this topic is resumed Note If topic is suspended by setting SUSPEND value to 1 then Server rejects all new write values to this topic i e no new write messages are created after SUSPEND value has changed from 0 to 1 Note The slave topics validate these additional items yet a lot of items are not useful for slave communication control as well as for communication process monitoring E g using of item SUSPEND takes no effect to communication because of it is not reasonable to interrupt comm
42. eed as directed by the UnInstallShield program Note The I O Server Infrastructure installation will be rejected if Wonderware FS2000 Common Components are already installed on same computer The I O Server Infrastructure does not support using MODBUS MASTER SLAVE Server as a Windows Service and remote access to MODBUS MASTER SLAVE Server when DDE SuiteLink Client is not located on same computer as MODBUS MASTER SLAVE Server MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 12 Configuring the MODBUS MASTER SLAVE Server After the MODBUS MASTER SLAVE Server is initially installed a little of configuration is required Configuring the Server automatically creates MODBUS CFG file that holds all of the topics nodes definitions entered as well as the communication port configurations This file will be placed automatically in the same directory in which the Server is located unless the path where the configuration file will be placed is specified via the Contigure Server Settings command To perform the required configurations start up the MODBUS program If the Server starts up as an icon double click on the icon to open the server s window The following will appear 72 Modbus olx Configure Help Suspend To access the commands used for the various configurations open the Configure menu 7 Modb
43. eeeeeeeeneeee 12 Server Settings COMMANC chi ta ek Ba Le AA AA ERE etl ae 12 Com Port Settings Command cccceeeeeeeeeeeeeeeeeeeeeeeeeeeeecneaaeeeeeeeeeeeeeeeenneeeeeeeees 14 Saving of the MODBUS Server Configuration File cceecceeeeeeeeeeeeeeeeeeeeenneeeeeeeees 15 Configuration File Location seyias jespeued ledles deeckertes ic cited Le pated spieeeddece waded enemies ouctetc sence ads 16 Socket Settings Command ic acne ae nose aan ayn a ner A ania als 16 Topic Definition Command ne tee Ne eae eal ee a a atc oh cats 19 Item NaMe Sierens eaa e aee Ce aec tere ce a a r a eee 28 Modbus Function 7 Read Exception Status Support ssessssssesssernnnneesseerrennnreeeee 29 Modbus Function 8 Diagnostics Support sssssssssesssesserrnreeseererernnnrrrsserrnnennnneeeene 30 Notes on Data Processing in Slave Mode ccccceeeeeeeeeeeeeeeeeeeeeeeeeeenneeeeeeeeeeeeeeeees 31 Monitoring and Controlling Communication with MODBUS Bus cccceeeeeeees 32 Using the MODBUS Server with OPC Clients ccceccceceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeneaeeees 34 COnmtgurning PCOM AR 35 Configuring DCOM to access MODBUS Server as a local OPC Server 35 Configuring DCOM to access MODBUS Server as a remote OPC Server 36 Most frequent errors when configuring DCOM ccccceeeeeeeeeeeeneeeeeeeeeeeeeeeenanees 37 Running MODBUS OPC amp DDE version as Windows NT Service
44. er internal log file or from Wonderware Logger like following 2013 02 18 19 11 43 850 Software Key 027d 7133 5146 e1d0 removed PC Code 4a0f 0675 7485 ca93 Product Code DR38010 158 5 Provide the obtained Software License Key removal message screenshot or string together with new Customer PC Code when applying for new Software License Key without purchasing the new license in situations when it is necessary to move Klinkmann software to other computer or operation system change is planned Note Without providing the Software License Key removal message screenshot or string the new Software License Key will not be assigned Installing the I O Server Infrastructure The I O Server Infrastructure installation package is supplied as a self extracting archive lOServerInfrastructure exe and can be downloaded from Klinkmann s web site To install the I O Server Infrastructure from the self extracting archive run the lOServerlnfrastructure exe and proceed as directed by the I O Server Infrastructure MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 11 Setup program To uninstall the I O Server Infrastructure start Control Panel select Add Remove Programs and select the IO Server Infrastructure from the list of available software products Click on Add Remove and proc
45. erial and Ethernet Communication Server 42 Add Access Name Access Name NODE1 Node Name Application Name MODBUS Topic Name NODE1 Which protocol to use C DDE SuiteLink When to advise server Advise all items Advise only active items Note If Add is selected this dialog box will be blank when it initially appears Data has been entered here to illustrate the entries that are made The following fields are required entries when entering an Access Name Definition Access Name In the Access Name box type the name you want InTouch to use to this Access Name For simplicity use the same name that you will use for the Topic Name here Node Name If the data resides in a network I O Server in the Node Name box type the remote node s name Application Name In the Application Name box type the actual program name for the I O Server program from which the data values will be acquired In case the values are coming from the MODBUS MASTER SLAVE Server the MODBUS is used Do not enter the exe extension portion of the program name Topic Name Enter the name defined for the topic in the MODBUS MASTER SLAVE Server to identify the topic the Server will be accessing The Topic Name is an application specific sub group of data elements In the case of data coming from MODBUS MASTER SLAVE Server program the topic name is the exact same name configured for the topic in the Server Note This wi
46. estore Delete Save lt gt Cancel Close Tagname JHR401 00 Type o Integer Group Svstem C Readonly Read Write Comment AccessLevel I LogData TF Log Events I Retentive Value I Retentive Parameters Click on New and enter the Tag Name The tag name defined here is the name InTouch will use The MODBUS MASTER SLAVE Server does not see this name Select the tag type by clicking on the Type button The Tag Types dialog box will appear MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 44 Memory Discrete 1 0 Discrete Indirect Discrete Memory Integer v 1 0 Integer Memory Real 1 0 Real Indirect Analog Memory Message 1 0 Message Indirect Message Group Var Hist Trend Tag ID Details FEIECE All 9 w im Tell w w To access MODBUS items the type must be I O Discrete I O Integer I O Real or I O Message Select the Tag type The Details dialog box for the tag name will appear Initial Value fo Min EU 32768 Max EU 32767 Deadband fo Min Raw 32768 Max Raw 32767 f Conversion Eng Units qi i Unassigned C Square Root ltem I Use Tagname as ltem Name Log Deadband fo Select the Access Name for MODBUS MASTER SLAVE Server by clicking on the Access Name button The Access Names dialog box will appear Access
47. et Communication Server 54 KLINKMANN AUTOMATION MODBUS MASTER SLAVE Communication Server TCP Server version Revision History July 99 Rev 1 0 First Release June 2000 Rev 1 1 SuiteLink and OPC versions added July 2000 Rev 1 2 Add Coils processing in Slave mode Sep 2000 Rev 1 3 Add Com port Flow Control Oct 2000 Rev 1 4 Add CRC bytes reverse in command Jan 2001 Rev 1 5 OPC compliance information added Jan 2001 Rev 1 6 Changed Topic Definition dialog box MultiWrite option added Mar 2002 Rev 1 7 Installation from CD information added Mar 2003 Rev 1 8 Ethernet interface and multiple slave topics added Jun 2003 Rev 1 9 Watchdog added Nov 2003 Rev 1 10 Socket configuration dialog box and Topic configuration dialog box modified TCPWORK DLL added Dec 2003 Rev 1 11 Socket Settings Command description modified Dec 2003 Rev 1 12 Support for long integers floating point values and bits in registers added Jun 2005 Rev 1 13 6 digits addressing added Holding registers 5 digit max address increased to 65000 Write Only items added Dec 2006 Rev 2 0 UDP protocol added Socket configuration dialog box and Topic configuration dialog box modified Support for function codes 07 and 08 added May 2007 Rev 2 1 Bit Mask Write for Holding Registers added Slight modifications in user manual text Aug 2011 Rev 2 2 Overview and Socket Settings Command sectio
48. for Slave topic should be 5 10 times longer than expected polling rate of Modbus Master otherwise bad communication status will be indicated time by time If Wait Timeout is set to 0 zero then slave topic waits for data forever the communication status will be good even if there is no communication with Modbus Master at all The following entries can be entered only for Master topic 8 Enter the maximum number of consecutive coils contacts to be read at time by one read command Coil Read option Valid values are between 0 and 2000 If Coil Read setting is set to zero then this operation will not be available for selected Topic 9 Enter the maximum number of consecutive coils that can be written at time by one write command Coil Write option Valid values can be between 0 and 128 If Coil Write setting is set to zero then this operation will not be available for selected Topic This option is not relevant in case Multiple Write Command is selected Note To process multiple coils writing in one command the WIN INI entry MultiWrite see chapter WIN INI entries must be equal to 1 or 2 and Coil Write option for corresponding Topic must be configured in MODBUS Topic Definition dialog box greater than 1 If Coil Write option is equal to 1 then multiple coils writing for corresponding Topic is not processed despite of WIN INI entry MultiWrite value 10 Enter the maximum number of consecutive registers to be read at
49. from 0 to 65535 or signed format value range from 32768 to 32767 Unsigned quantities may be read by entering item name without suffix For example area 40001 in a PLC contains 8000 hex In this case item name 40001 would be displayed in InTouch or Excel as 32768 Signed MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 29 quantities may be read from the same channel by appending the suffix S or s to the item name So item name 40001S would be displayed in InTouch or Excel as 32768 Long Format Two consecutive 16 bit words in a PLC can be interpreted as a 32 bit long integer value range from 2 147 483 648 to 2 147 483 648 To read write an item in signed long format append the letter L or T to the item name For example if 40001 contains 1 and 40002 contains 2 then 40001L returns 65538 Floating Point Format Two consecutive 16 bit words in a PLC can be interpreted as a floating point real value For IEEE 32 bit floating point values 3 402823 10 38 to 3 402823 10 38 the letter F or f must be appended to the item name For example if 40001 contains 9620 hex and 40002 contains 2436 hex then 40001F returns 3 959212 10 17 For floating point IEEE 754 standard the letter R or r must be appended to the item name Individual Bits in Register Individual bits in registers ca
50. g value into Server After that the Server forwards item s value to the client application To transfer poke item s value into MODBUS master node the client application must activate an item poke value and wait until MODBUS master node requests corresponding value from Server If master PLC requests a group of Registers or Coils then all requested Registers or Coils must present in Server s active Item list Otherwise the Server answers with error response message error code 02 Illegal Data address The Multiple Write Command option see Topic Definition Command section above in this manual is not relevant in Slave mode In slave mode the Server accepts the following commands from master PLC Read Coils function code 01 Read Discrete Inputs function code 02 Read Holding Register function code 03 Read Input Register function code 04 Write Single Coil function code 05 Write Single Register function code 06 Write Multiple Coils function code 15 OxOF in hex Write Multiple Registers function code 16 0x10 in hex In slave mode Modbus Server recognizes the PLC address from the content of received request and compares it with PLC Station Number configured in the MODBUS Topic Definition dialog box see Topic Definition Command section above in this manual Each topic on the slave port must have unique PLC Station Number Not all items for monitoring and contr
51. guration permissions Read must be set for NETWORK and for users working on remote OPC client computers Identify The interactive user must be selected Most frequent errors when configuring DCOM The following table contains most frequent errors when configuring DCOM Error message Possible reason DCOM not installed DCOM has not been installed Server execution failed 1 OPC Server can not be started 2 Identity for OPC server not properly configured 3 OPC Server is not located on a local hard disk 4 OPC Server path in registry is too long or uses LFN Long File Names 5 DCOMCNFG Location is not set to Run on this computer Class not registered OPC Server has not been registered RPC server is unavailable 1 Remote Procedure Call service is not running on the OPC Server computer 2 Invalid computer name for remote OPC Server 3 Make sure TCP IP is installed properly Interface not supported 1 Permission not granted to OPC Client 2 Guest account disabled Access is denied 1 DCOM security not configured properly 2 OPC Server application not located on local hard disk 3 SYSTEM account in DOOMCNFG must have Access Launch and Configure privileges Error 80070776 Network error TCP IP has not been configured properly Catastrophic failure 1 Trying to access an object before it is created 2 Unhandled exception is occurs on the OPC Server Not enough storage SYSTEM account in DOOMCNFG must have Access Launch and Configure
52. ial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 15 Select the Master or Slave state of the port Depending of the state the topics tied with the port will act as MODBUS master or slave device Several topics even with equal Station Numbers can be defined if the port acts as a Master With Slave port also several topics can be defined but each topic must have unique Station Number Note Availability of entries on Modbus Topic definition dialog box see chapter Topic Definition Command depends on selected port state Master or Slave Select the Baud Rate that matches the setting chosen for the hardware Note The default Baud Rate is 9600 Select the Data Bits value that matches the setting chosen for the hardware Note The default Data Bits setting is 8 Select the Stop Bits value that matches the setting chosen for the hardware Note The default Stop Bits setting is 1 Select the Parity that matches the setting chosen for the hardware Note The default Parity is Even Select the Flow Control mode option Handshaking None or Hardware Note The default is None Select the CRC bytes order in request and response command Standard LOBYTE HIBYTE or Reversed HIBYTE LOBYTE Choose the CRC bytes order that the connected nodes support The following are recommended communication parameters Baud Rate 9600 8 Data Bits 1 St
53. ible item names acceptable by OPCLink Server MODBUS Server connection D00001 Discrete Binary output address 1 130002 Integer Register input address 2 MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 41 Using the MODBUS Server with Suite Link and DDE Clients The Suite Link amp DDE version of MODBUS Server is accessible from Suite Link clients e g InTouch and DDE clients e g Excel The OPC amp DDE version of MODBUS Server is accessible from DDE clients Using the MODBUS Server with InTouch To access items points on a MODBUS node from InTouch the Access Names and Tag names should be defined in WindowMaker Defining the Access Names InTouch uses Access Names to reference real time I O data Each Access Name equates to an I O address which can contain a Node Application and Topic Ina distributed application I O references can be set up as global addresses to a network I O Server or local addresses to a local I O Server To define the Access Names in WindowMaker node invoke the Special Access Names command The Access Names dialog box will appear Access Names Delete Click on Add The Add Access Name Dialog Box will appear MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE S
54. issions NETWORK are not needed To uninstall MODBUS OPC amp DDE Server NT Service at first the Service must be stopped by Control Panel Services Stop and then MODBUS Server must be started manually with command line parameter DelService MODBUS DelService After this the MODBUS Server OPC amp DDE version will be still registered and accessible to OPC clients Using MODBUS with OPCLink Server The Wonderware OPCLink I O Server hereafter referred to as OPCLink is a Microsoft Windows application program that acts as a communication protocol converter and allows other Windows application programs access to data from local or remote OPC servers OPCLink connects to OPC servers converts client commands to OPC protocol and transfers data back to clients using DDE FastDDE or Suite Link protocols Please refer to Wonderware OPCLink Server and OPC Browser User s Guide for details how to install start and use the OPCLink Server The following information in this section covers only the most important points about using OPC amp DDE version of MODBUS Server with OPCLink Server OPCLink Topic Definition The Topic Definition option from OPC Link Configure menu is used to create modify or delete OPCLink topic definitions If OPC Link will communicate with MODBUS Server then there must be one or more topics defined for MODBUS Server There are following important fields on the OPCLink Topic Definition dialog box MODBUS MAST
55. itten to this PLC it can cause the computer memory overfill with memory allocated for write messages MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 50 ConsecutiveWriteErrors The ConsecutiveWriteErrors entry is used to enter the number of consecutive unsuccessful write retries for one write command If after ConsecutiveWriteErrors the write command still is not executed then write command is deleted from the list of active pending write messages and write is finally rejected If the total amount of messages in the list of active write messages exceed 300 then every write message is performed only once not taking into account the ConsecutiveWriteErrors value The default ConsecutiveWriteErrors value is 5 used if WIN INI file does not contain this entry Troubleshooting menu The following debugging choices are appended to the Server s System Menu the menu that appears when you click on the Server icon in the upper left hand corner of the Server window Suspend Protocol Resume Protocol these choices permit you to turn protocol processing on and off what means that you can suspend access to the MODBUS node ShowEvents if checked then Server logs the information about situations when the total number of active pending write messages exceeds 300 It may happen when the Server has timing problems when ex
56. l Logger window looks like following t Logger of x Options 2006 08 06 19 42 38 453 Modbus S COM1 Topic unitl 2006 08 06 19 42 38 578 Modbus R COMT1 Topic unitl 2006 08 06 19 42 43 453 Modbus S COMI1 Topic unitl 2006 08 06 19 42 43 578 Modbus R COM1 Topic unitl 2006 08 06 19 42 48 453 Modbus S COMI1 Topic unitl 2006 08 06 19 42 48 671 Modbus R COM1 Topic unitl 2006 08 06 19 42 53 453 Modbus S COMI1 Topic unitl 2006 06 06 19 42 53 578 Modbus R COM1 Topic unit 2006 08 06 19 42 58 453 Modbus S COM1 Topic unitl 2006 08 06 19 42 58 578 Modbus R COM1 Topic unitl 01 0300630001 7414 01 03 02 00 00 B8 44 01 0300630001 7414 01 03 02 00 00 B8 44 01 0300630001 7414 01 03 02 00 00 B8 44 01 03 00 63 00 01 7414 01 03 02 00 00 B8 44 01 03 00 63 00 01 7414 01 03 02 00 00 B8 44 To save Internal Logger information to file select Options Disk Options from Internal Logger main menu the Disk Options dialog box will appear MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 52 M Log to File i i File Options j Cancel Directory pie Ic ModbMSSerialEth Keep Log File for jo days The following can be entered in this dialog box Log to Wonderware Logger If checked then debug information will be logged also to Wonderware Logger or L
57. lication must set DIAGxx to 0 and then again to 1 REZxx O Discrete Optionally used Indicates the result of command with sub code xx execution If 1 then it means the command with sub code xx was executed successfully and 0 when no response from PLC received DATAxx O Integer Optionally used 2 bytes long value to be put into Data Field of request command if data field value is relevant for sub code Relevant Data Field value is for sub function 01 Restart Communications Option possible values 0 or OxFFOO For example the processing of sub function 01 Restart Communications Option with Communication Event Log to be cleared Client application must activate items DIAGO1 DATA01 and optionally REZ01 and do the following 1 write value OxFFOO into DATAO1 item 2 write value 1 into discrete item DIAGO1 3 check whether value of REZ01 changes from 0 to 1 and if not changes reset DIAGO1 to 0 and again to 1 MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 31 Note Most of PLC control sub functions can be controlled with only one item DIAGxx Using of REZxx item is optionally in all cases With DATAxx the following principals are implemented in Server if DATAxx data item is not created by application at all then Server processes command with default Data Field value 0 zero If DA
58. ll usually be the same as the Access Name although if desired they may be different However it must be the same name used when the topics were configured in section Configuring the MODBUS MASTER SLAVE Server Which protocol to use Select the protocol DDE or Suite Link that you are using MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 43 When to advise server Select Advise all items if you want the Server program to poll for all data whether or not it is in visible windows alarmed logged trended or used in a script Selecting this option will impact performance therefore its use is not recommended Select Advise only active items if you want the Server program to poll only points in visible windows and points that are alarmed logged trended or used in any script Click OK to accept the new Access Name and close the Add Access Name dialog box The Access Names dialog box will reappear displaying the new Access Name selected in the list Click Close to close the Access Names dialog box Defining the Tag names To define the Tag names associated with the new Access Name invoke the Special Tagname Dictionary command in WindowMaker The Tagname Dictionary dialog box will appear Tagname Dictionary x C Main Details C Alarms Details amp Alarms Members Hew R
59. n be read as discrete tags by using the notation rrrr b or rrrr bb or rrrr b or rrrr bb where rrrr specifies a valid input register holding register or Extended memory register and b or bb specifies a bit position between 1 and 16 1 specifies the most significant bit of the register Examples 40001 1 most significant bit of first holding register 30008 16 least significant bit of an input register Write Only items In general outputs coils and holding registers are Read Write but in some special cases it would be necessary to have Write Only possibility to same addresses For this purpose the suffix W or w can be added to the item name for example 00001w or 400012LW VTQ aware clients besides the value of the point can use also the time stamp and the quality of points The quality value 0x00CO indicates good quality If Server cannot refresh the value of item the item quality is set to No Access 0x0004 Note Do not operate with items representing non defined operands on the node It will lead to communication failures Modbus Function 7 Read Exception Status Support Modbus function code 7 obtains the status ON OFF of the eight internal coils which addresses are controller dependent User logic can program these coils to indicate slave status The short length of response message allows the rapid reading of status To use function code 7 the exception_status item I O integer is created Modbus Server
60. name Meaningful name of communication entity that is referred also as Logical device Commonly the name considers entire MODBUS node but in more intricate applications separate data and control item groups on the same node can be accessed by different topics For example NODES is an ordinary topic name for the fifth node on the MODBUS bus Note You can define multiple topic names for the same device node to poll different items at different rates item name A specific data element within the specified topic For example when using this Server items can be individual operands registers binary inputs binary outputs in the MODBUS node The term point is used interchangeably with the term item in this User Manual For more information on item names see the Item Names section later in this manual MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 4 Installing the MODBUS MASTER SLAVE Server Installing the Server The MODBUS MASTER SLAVE Server installation package is supplied as a self extracting archive 38010xxx msi Suite Link amp DDE version or 38011xxx msi OPC amp DDE version where xxx is the current latest version of the Server To install the MODBUS MASTER SLAVE Server run the 3801 0xxx msi or 3801 1xxx msi and proceed as directed by the MODBUS MASTER SLAVE Server Setup Wiza
61. ns modified May 2013 Rev 2 3 Installing the MODBUS Server section modified Licensing by using HASP HL key and Software license key sub sections added MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S
62. og Viewer if installed Log to File If checked then Internal Logger information will be saved to Internal Logger File The MODBUS Internal Logger file name is created in the following format MODBUS_YYYYMMDD LOGn where YYYY is a year MM is a month DD is a day and n is a order number of consecutive MODBUS Internal Logger file starting from 1 The MODBUS Internal Logger file maximum size is 16 MB if there is more information logged then next consecutive file is created e g there can be consecutive files MODBUS_20030228 LOG1 MODBUS_20030228 LOG2 etc Directory Enter the path where to keep the Internal Logger File Keep Log File for Here the number of days how long to keep the Internal Logger File can be entered After this number of days expires the corresponding Internal Logger File will be automatically deleted The default value 0 keeps Internal Logger Files forever in this case they can be deleted manually Options Font To configure the font used by Internal Logger select Options Font from Internal Logger main menu the Font dialog box will appear MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 53 MS Sans Serif MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethern
63. olling the communication with MODBUS node chapter Monitoring and Controlling Communication with MODBUS Bus are relevant in slave mode Monitoring and Controlling Communication with MODBUS Bus For each master topic there are the following additional items offered by MODBUS Communication Server to monitor and control the communication with MODBUS node STATUS For each topic there is a built in discrete item that indicates the state of communication with MODBUS node The discrete item STATUS is set to 0 when communication fails and set to 1 when communication is successful From InTouch the state of communication may be read by defining an I O Discrete tagname and associating it with the topic configured for the PLC and using STATUS as the item name MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 33 From Excel the status of the communication may be read by entering the following formula in a cell MODBUS topic STATUS UPDATEINTERVAL The UPDATEINTERVAL item is an Integer type Read Write item used to access the currently set Update Interval see Topic Definition Command It indicates the current requested update interval in milliseconds The value of this item can be read through DDE or Suite Link Client can poke new values to this item The range of valid values is from 10 to 2147483647 milliseconds Th
64. op Bit and Even Parity f necessary these parameters can be changed The communication parameters entered here must match with settings of the MODBUS bus Once communication parameters select Save to save the configuration for the communication port Once all entries have been made click on OK Saving of the MODBUS Server Configuration File If the configuration file does not currently exist or a new configuration path has been specified the Server will display the Save Configuration dialog box Configuration File Directory C MODBUS Defaults M Heke this the default configuration file This dialog box displays the path where the Server is going to save the current configuration file The path may be changed if necessary Also the path can optionally be recorded in the WIN INI file by selecting the Make this the default configuration file option Doing so will allow the MODBUS MASTER SLAVE Server to find the configuration file automatically each time it is started MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 16 Configuration File Location When the MODBUS MASTER SLAVE Server starts up it first attempts to locate its configuration file by first checking the WIN INI file for a path that was previously specified If the path is not present in the WIN INI file the Server will assume that the cu
65. ork usually leave the IP Port equal to 0 as listening port is specified in Server Socket configuration MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 22 r Communication Type C Serial Ethemet Socket socket Rem IP Address 0 0 0 0 Rem IP Port o In special cases also non zero Rem IP port can be entered for example if PC and PLC s are in different subnets and some Ethernet gateway bridge is used between PLC and PC PLC1 IP11 Port111 PLC2 IP12 Porti12 PLC3 IP13 Port113 Subnet 1 IP14 Port114 PC IP22 Port211 IP21 Port211 Gateway Subnet 2 In above example the Gateway is used for redirection forwarding between Subnets 1 and 2 PLCs connect to Gateway s IP14 and Port114 which are redirected to IP21 and Port211 The corresponding Modbus Server configuration would be like following there are non zero IP Port numbers entered in Topic definition to be able to determine the exact PLC Server Socket settings Local IP Address 0 0 0 0 Local Port Number Port211 Topic PLC1 settings Rem IP Address IP21 Rem Port Number Port1 11 Topic PLC2 settings Rem IP Address IP21 Rem Port Number Port112 Topic PLC3 settings Rem IP Add
66. orwards Watchdog message to corresponding PLC This value must be equal to time interval the PLC program checks the test address Enter Address to Write field to indicate address in PLCs memory that is used as Watchdog test address Address to Write must be valid item point name see Item Names section Note Use only Output Register areas for Watchdog Do not take addresses not presented on current PLC configuration Do not take addresses used in PLC s program logic Enter integer from 0 to 65535 into Value to Write field to set Watchdog predefined value The same value PLC program expects to see in test area Note Default Watchdog state is non active it is Watchdog Time Interval is equal to zero 15 By checking or un checking the Multiple Write Command checkbox select the type of write commands supported for this Topic multiple write commands Modbus functions 15 and 16 if Multiple Write Command is checked or single write commands Modbus functions 5 and 6 if Multiple Write Command is not checked For Slave topic both multiple and single write commands are supported 16 By checking or un checking the 6 Digit Addresing checkbox select whether to use the 5 digits default or 6 digits for addressing the item names for connected Modbus device MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 26
67. rd The installation is simple and straightforward only it is important to select the correct protection HASP key or software license in Custom Setup dialog The HASP key or software license key is needed for full time running of the MODBUS MASTER SLAVE Server The HASP key is an USB key dongle to be installed into PC USB port and needs the SafeNet Sentinel LDK Run time Environment HASP HL Runtime Package to be installed and running see details in Licensing by using HASP HL key section below The software license key is a 16 character alphanumeric computer dependent string provided after purchasing the MODBUS MASTER SLAVE Server for more information see Software license key section below Without HASP key installed or software license key entered the MODBUS MASTER SLAVE Server will run one hour in demo mode After purchasing the Server the appropriate HASP key or software license key is provided and no re installation of the MODBUS MASTER SLAVE Server is needed In case HASP Device driver and HASP files are selected then HASP USB key will be supported and both HASP key and software license will be available files needed for HASP USB key will be installed ji Modbus Client SL and DDE Server Setup S loj xj Select the way you want features to be installed Click the icons in the tree below to change the way features will be installed HASP Device driver E v HASP Files Sentinel L
68. ress IP21 Rem Port Number Port113 MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 23 4 Enter the PLC PC Station number the PLC remote Modbus device number on the MODBUS bus for Master topic or the node number of S ave topic itself 5 Enter the Reply Timeout for Master topic only amount of time in seconds the slave PLC device using the selected port will be given to reply to commands from the Modbus Server 6 Enter the Update Interval field for Waster topic or Wait Timeout for Slave topic For Master topic the Update Interval field indicates the frequency the items points on this topic will be read polled This is requested update rate at this frequency the values of all this topic active items must be updated In real conditions when large amount of data is requested from device the real update rate can be longer the Modbus Server for maximum possible performance will automatically adjust it For Slave topic the Wait Timeout field is used to enter the amount of time the Slave topic using the selected port or Socket and entered Station number will wait for any command arriving from Modbus Master if no data arrive then communication status will be changed to bad Note The default Update Interval is 1000 milliseconds The Wait Timeout
69. roup of consecutive valid Addresses as comma separated individual Addresses For example enter 2 4 instead of 2 3 4 Note Unique Address file can be created for each Topic At the same time common Address file can be used for all Topics Note Address file can be created for each Topic At the same time common Address file can be used for all Topics 14 Configure the Watchdog if PLC user program needs to check whether there is communication with a computer running Modbus Server and application or not With Watchdog activated the Server periodically writes some predefined value e g 999 into predefined address in PLC s memory e g into 40100 At the same time the PLC program must periodically check the value in this memory address If value is equal to Watchdog s predefined value then PLC s program considers communication Status as Good and resets test address to different non predefined value e g to O It will allow to program to check communication state the next time If value differs from predefined then PLC s program considers communication Status as Bad Note Because of time synchronizing problems with PLC and PC it is recommended to consider the communication Status as Bad only after few consecutive test value mismatch cases not immediately after the first mismatch To activate the Watchdog processing set Watchdog Time Interval to non zero value Value entered in this field indicates the frequency the Server f
70. rrent working directory is to be used To start the Server from an application directory configuration file other than the default configuration file a special switch d is used For example invoke the File Run command and enter the following MODBUS d c directoryname Note There is no limit to the number of configuration files that may be created although each must be in a separate directory Socket Settings Command To configure the Socket used to access data from MODBUS bus over Ethernet interface TCP Server mode the following steps are taken 1 Invoke the Configure Socket Settings command The Socket Settings first dialog box will appear Socket s D one 2 To modify or examine an existing Socket select the Socket name and click on Modify To define a new Socket click on New The Modbus Socket Settings dialog box will appear MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 17 Socket Name sockett Network Status Cancel Master m Protocols Standard Modbus TCP C Serial Ethemet TCP TCP Modbus IP CRC C Slave m Ethernet Parameters IP Address fo 0 0 0 Port Number 502 Max Connection fi oo Count ID String Enter the Socket Name Protocols The following Protocols are supported Standard Modbus TCP protocol
71. rst tick the request with task code is sent to the bus and on the second tick the response with data or the acknowledgement is received from the bus If the Server acts as a MODBUS slave the response or acknowledgement is sent in the same tick in which the request is received If some step of send receive cycle is taking too long time then more than one activation of the Server is needed to process it If computer is very busy or some other MS Windows application is taking over the computer then the Server is activated rarely than setting in the Protocol Timer Tick Note The default value is 50 milliseconds The minimum value is 10 milliseconds With minimum value the maximum performance of Server is ensured but in this case also the overload of computer is possible In case of computer s overload the Protocol Timer Tick value can be increased to some higher value to achieve Server performance and computer load optimum correlation NetDDE being used Select this option if you are networking using NetDDE Configuration File Directory The first field is used to specify the path disk drive and directory in which MODBUS MASTER SLAVE Server will save its current configuration file The Server will use this path to load the configuration file the next time it is started Note Only the path may be modified with this field The configuration file is always named MODBUS CFG Note There is no limit to the number of configuration files created al
72. s Launch permission must be set for each user which can be able to configure OPC items on OPC Server computer On the client computer OPCEnum launch permissions can be default but some OPC clients may handle this situation incorrectly therefore it is better to assign launch permission for users working on remote OPC client computer Security configuration permissions SYSTEM must have at least Read permission on OPC Server computer On OPC Client computers at least Read permission must be set for users working with OPC clients Administrators must have Full Control permission on both computers otherwise nobody can be able to configure or unregister OPCEnum Identify On GSM Control OPC Server computer the Identify must be set to The interactive User On remote OPC Client computer it can be The interactive user or The launching user DCOM Settings for MODBUS OPC amp DDE Server as remote OPC Server MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 37 Location Run application on this computer must be checked Security access permissions can be default If MODBUS OPC amp DDE Server is running as Service then Allow Access permission should be set for NETWORK and remote OPC client computers Security launch permissions must be set to NETWORK and for users working on remote client computers Security confi
73. se communication port is configured as a Slave port then each topic must have unique PLC Station Number lf Ethernet communication is selected then click on the Socket combo box to associate a topic with Socket Note Additional topics may be associated with the same Socket later All topics associated with one Socket must have the same IP Address and IP Port number Additional topics associated with Slave status Socket each must have unique PLC Station Number If topic is associated with Ethernet port then additionally the Rem IP Address and Rem IP Port edit boxes will be displayed Topic Name node1 rm Communication Type C Serial Ethernet Socket socket Rem IP Address 192 168 140 27 Rem IP Port 502 PLC Station Number fi Reply Timeout sec 2 00 Update Interval 1000 milliseconds rm Block 1 0 Sizes Coil Read 2000 Register Read 125 Coil write fi 29 Register Write ft oo Maximum Message Lenath 255 r Coil Register Address Field Standard Adjusted in File File Name in Browse Watchdog Time Interval sec fo j i Multiple Write Command I Address to Write j i 6 Digit Addressing a fale iu Vite fo Mask Write Hold Reg 7 Cancel i Enter the IP address from where the connection is permitted or leave 0 0 0 0 here any IP address permitted in case the IP address is not known e g if connecting from public GPRS netw
74. speed 12 The Maximum Message Length value affects the Modbus communication similar way as Coil Read Coil Write Register Read and or Register Write settings If Coil Read Coil Write Register Read and or Register Write values conflicts with Maximum Message Length setting then Modbus Server creates communication commands taking into account the greatest restriction The default value is 255 bytes 13 Select the accessible Coil Register Address Field of your PLC remote Modbus device If Standard option is selected then Modbus Server validates the following addresses Coils from 00001 to 09999 Contacts from 10001 to 19999 Input Registers from 30001 to 39999 and Output Registers from 40001 to 49999 If your PLC supports limited Address field some Coils Contacts or Registers are not accessible then there may be some communication problems when Server tries to poll inaccessible memory areas To avoid this problem the valid Addresses can be presented in an ASCII file Such file can be created and altered manually with any text editor do not use a program that formats text such as MS Word or Write unless the file is saved as a DOS text Give the name to file that you like e g AddrFile If such file is created then select Adjusted in File option Now the File Name dialog option is accessible Type the path and name of Address file e g C Modbus AddrFile You can also press the Browse File button In this case the Select file di
75. the name of Server executable file is MODBUS EXE All further information in this manual is same for all versions of the Server with the exception of few points where communication protocol specific features are explained Communication Protocols Dynamic Data Exchange DDE is a communication protocol developed by Microsoft to allow applications in the Windows environment to send receive data and instructions to from each other It implements a client server relationship between two concurrently running applications The server application provides the data and accepts requests from any other application interested in its data Requesting applications are called clients Some applications such as Wonderware InTouch and Microsoft Excel can simultaneously be both a client and a server FastDDE provides a means of packing many proprietary Wonderware DDE messages into a single Microsoft DDE message This packing improves efficiency and performance by reducing the total number of DDE transactions required between a client and a server Although Wonderware s FastDDE has extended the usefulness of DDE for the industry this extension is being pushed to its performance constraints in distributed environments The MODBUS MASTER SLAVE Server Suite Link amp DDE version supports the FastDDE Version 3 an extension to Wonderware s proprietary FastDDE Version 2 This extension supports the transfer of Value Time Quality VTQ information The original D
76. thernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 18 Notes 1 Several topics all with equal IP Address and IP Port number can be defined for Socket with Master status For Socket with Slave status also several topics all with equal IP Port number and computer IP Address can be defined but each topic must have unique PLC Station Number 2 Availability of entries in Modbus Topic definition dialog box see the Topic Definition Command section later in this manual depends on selected Socket Network Status Master or Slave Ethernet Parameters Enter the local IP Address and non zero local Port Number of your computer As local IP Address the default IP address 0 0 0 0 or 128 0 0 1 can be entered Max Connection Count This setting specifies the number of Ethernet connections supported by Socket the default value is 100 Each time when DDE SuiteLink OPC client application activates the communication with some Modbus Server topic associated with Master Socket the Modbus Server creates a Socket and waits for Ethernet connection from remote device PLC Modbus Server accepts the received connection if remote device PLC IP Address and Port corresponds to settings of one of topics associated with current Socket ID String This setting is available only if Protocol type Serial Ethernet TCP is selected and it is
77. though each must be in a separate directory When using the MODBUS MASTER SLAVE Server with InTouch it is good practice to place the configuration file in the application directory Start automatically as Windows NT Service Enabling this option will cause the MODBUS MASTER SLAVE 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 MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 14 user must log on to the system Any Server related problems that may arise such as missing adapter cards licensing failures or device drivers not loading will not be visible to the user until a log on is performed Disabling this option and rebooting the system will cause the Server to run as a Windows NT application program once again Notes 1 The Start automatically as Windows NT Service feature can be activated only with MODBUS Server Suite Link amp DDE version To start the MODBUS Server OPC amp DDE version as Windows NT Service refer to Running MODBUS OPC amp DDE version as Windows NT Service
78. uations Dump displays all information about ports active topics and data items DumpScreen if checked information about active topics and messages is displayed in MODBUS MASTER SLAVE Server main window MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 51 Show Logger if checked then MODBUS Internal Logger is activated and all debug information is going to MODBUS Internal Logger The MODBUS Internal Logger file is named in the format MODBUS_YYYYMMDD LOGn where YYYY is a year MM is a month DD is a day and nis a order number of consecutive MODBUS Internal Logger file starting from 1 the MODBUS Internal Logger file maximum size is 16 MB if there is more information logged then next consecutive file is created e g there can be consecutive files MODBUS_19990413 LOG1 MODBUS_19990413 LOG2 etc All debugging information except DumpScreen option is displayed via the Wonderware Logger or and MODBUS Internal Logger if Show Logger checked which must be active for these commands to work Warning if you check Show Send Show Receive and or Verbose debug output grows very fast Internal Logger To enable the MODBUS Internal Logger check the Show Logger option at the MODBUS Server System Menu see Troubleshooting menu section above this command can be used to start stop the Internal Logger The Interna
79. unication with master node The same item s MAXINTERVAL value can not characterize Server s execution because of Server can only wait for data from master node Using the MODBUS Server with OPC Clients The OPC amp DDE version of MODBUS Server is accessible from OPC Clients There are the following general steps needed to access an OPC item from MODBUS Server 1 Run OPC Client application and select the MODBUS OPC and DDE Server from the list of available OPC Servers If MODBUS Server currently is not running it will start automatically Create a new group or topic if Wonderware OPCLink application is used If OPC Client supports the validating of items validate the item before adding it Add the item Depending on OPC Client it can be done in several different ways for example eN a By entering separately the access path to topic name valid topic name configured in MODBUS Topic definition and separately the item name b By entering the full path to item name in the format TopicName ltemName where TopicName is the valid topic name configured in MODBUS Topic definition c By browsing the server address space By default the MODBUS Server is installed and used as a local OPC Server both OPC Server and OPC Client reside on same computer The MODBUS Server can run also as a remote OPC Server in this case OPC Server and OPC Client are located on separate computers Accessing the remote OPC Server is same as for
80. us iof x ieee Help Suspend Com Port Settings Socket Settings Topic Definition Server Settings Server Settings Command A number of parameters that control the internal operation of the Server can be set In most cases the default settings for these parameters provide good performance and do not require changing However they can be changed to fine tune the Server for a specific environment To change the Server s internal parameters invoke the Configure Server Settings command The Modbus Server Settings dialog box will appear MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 13 Modbus Server Settings Protocol Timer Tick 50 msec M NetDDE being used Cancel Configuration File Directory C MODBUS I Start automatically as Windows NT Service The following describes each field in this dialog box Protocol Timer Tick This field is used to change the frequency at which the Server checks for work to do At this frequency the Server tries to send one request command to the bus and receive one reply from the bus when Server acts as master device or to look for a request from the bus and send the reply to the bus when Server acts as slave device If the Server acts as a MODBUS master two activations of the Server are needed to process one full data exchange cycle At fi
81. ve v Show Errors ShowBadWrites v Showd llRejectedWrites Verbose 4 Dump v Dump Screen Show Logger 2 Select Help License from main menu and click the Transfer button on License Product Code Customer PC Code 4a0f 0675 7485 ca93 Iransfer Software Key 0274 71 33 5146 e1d0 Cancel 3 Confirm the transfer of Software License Key by clicking on Yes button I x 2 Doyou really want to transfer Software Key to other computer and permanently remove Software Key from this computer The License dialog now will contain the empty Customer PC Code and Software Key fields MODBUS MASTER SLAVE Serial amp Ethernet Comm Server Ver 1 x User Manual Rev 2 3 380xxm23S Klinkmann Automation MODBUS MASTER SLAVE Serial and Ethernet Communication Server 10 x Product Code OK Customer PC Code o000 0000 0000 0000 Transfer Software Key Cancel 4 Take the screenshot from the MODBUS MASTER SLAVE internal log file or Wonderware Logger window containing the Software License Key removal message like below x Message Details l x Date t 2013 02 gt poftware Key 027d 7133 5146 e1d0 removed PC Code 4a0f 0675 7485 ca93 Product Code DR38010 158 Time 19 11 43 Process ID 6420 Thread ID Log Flag 3424 Info 861 Message or take the string with Software License Key removal message directly from MODBUS MASTER SLAVE Serv

MODBUS Master/Slave Communication Server (TCP

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