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GW-7552 PROFIBUS/MODBUS GATEWAY User's Manual

1. Profibus Output Data Profibus Input Data Address Configure Address Configure Byte 0 Byte 0 Byte 1 Byte 1 Byte 2 Byte 2 Byte 3 Byte 3 Byte 4 Byte 4 Eyte 5 Byte 5 Byte 6 Byte amp Byte 7 Byte 7 Byte 8 Byte 8 Byte 9 Byte 9 Byte 10 Byte 10 Byte 11 Byte 11 Byte 12 Byte 12 Figure 58 Space configuration in profibus 5 3 3 Space configuration in modbus The window of Space Configuration in Modbus divided into 3 parts to explain as shown in figure 59 1 Select module The user can select check box of the module to show memory address configuration of DI DO AI AO in Modbus network 2 Display interface The user can click Write Output button to show DO AO memory address configuration of output modules in Modbus network click Read Input button to show DI AI memory address configuration of input modules in Modbus network click Read Output button to show DO AO memory address configuration of input modules in Modbus network 3 Color display The user can discriminate states of Modbus address configuration by GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 59 different color White means the address 1s not used Light blue means the address was configured by a module Mazarine means the address was configured by many modules but Modbus ID is not repeat in these modules Red means the address was configured by many modules and Modbus ID 1s repe
2. Master Module 3 Module 4 4 Modbus Format RTLI n Lo Value For Stop Mode Retain Last Value Module 5 le l Modbus Device ID 5 1 EP Poll interval timei ms Mi Module 6 SP Time out value ms Mi Module 7 Module count Module 8 Module 9 2 Module State 3 Com Port State D Figure 55 Main window of the utility Main window of the utility has 6 parts they are 1 Menu 2 Com port settings 3 Module state 4 Module parameters 5 Connection status of GW 7552 and com port 6 Status bar as shown in the below 5 2 1 Menu 1 Communication gt a Connect Open Com Port and connect with the GW 7552 b Disconnect Close Com Port and disconnect with the GW 7552 c Exit Exit from the utility 2 Safe Value Setting a New Setting Open a new safe value setting b Load from file Load a safe value setting from the file c Load from device Load a safe value setting from the GW 7552 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 56 3 View a Space configuration in device Display memory address configuration of select module in the GW 7552 b Space configuration in profibus Display memory address configuration of select module in Profibus master station c Space configuration in modbus Display memory address configuration of select module in the Modbus 4 Help a About Utility Show about version of the utility 5 2 2 Com Port settings
3. Packet Responses 200 Curent Packet Size bytes 8 Quantity Current Packet Size bytes 7 Total Packet bytes 11 Difference Total Packet bytes B Timer mode fixed period Packet Quantity sent n 1 u Packet Quantity received 1 Inte mal s Polling or Timer mode Date Time Polling Made Timing ms Start time Time Start Max 000 Average s time Time Stop Min 100 O00 Responses mi OF 00 00 00 10 54 07 li PTIM TEST pb Master0 Input001 8 bit unsigned integer byte Diagnostics Input 02 8 hit unsigned integer by 1 d fi Slaved Slavel ff Input module T System T Output module E Input module a IO Watch Settings not saved yet PES Enn p een be o on Don Eye Hex C Program Files Hilcheri yCon ProjectiPTM TEST pb For Help press F1 OPCS not available Connected OPC Clients 00 Figure 46 Receive OxFF in the input data area GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 47 Table I5 Receive OxFF in the input data area Module Data type Representation Byte Hex Byte Hex Input module PS Modbus command Query message SA SA NO NO CRC Hi Lo Hi Lo mu check KANA KO CA KO CL LIL Response message e el ake up CRC oro foo foe fo
4. Dip switch Setting setting mode setting mode GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 18 3 Communication protocol transfer theorem 3 1 Profibus data exchange The GW 7552 is a Profibus DP slave device The GW 7552 is first parameterized then configured and finally it goes into the data exchange mode Figure 15 Profibus DP Slave state machine p T Power On a r i y n m Y y m r Reset Parameterization Figure 15 State machine of Profibus DP slave device The GW 7552 exchanges data cyclically between internal DI DO AI AO data and Profibus master device in data exchange mode as shown in figure 16 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 19 PROFIBUS GW 7552 MASTER Profibus Modbus Gateway a TA ap S QUA Cyclic Data exchange ee L f Output Data Input Data Max 130 Bytes Max 12x Bytes Byte fb vic th Byte 129 Byte 127 Figure 16 Data exchange between Profibus master device and GW 7552 The GW 7552 downloads the parameter and configuration from Profibus master device to be the module parameters The GW 7552 and Profibus master device have different data type and data address the GW 7552 can transfer different data format to Profibus master device through module parameters When the GW 7552 acts as a Modbus master device it will send DI AI data to input data area of Profibus master device and
5. SLAVE DEVICE FAILURE Please refer Modbus SLAVE DEVICE BUSY Exception Code NEGATIVE ACKNOWLEDGE a for etall ACKNOWLEDGE Module 1 32 Error MEMORY PARITY ERROR MODBUS NOT DEFINED ERROR GATEWAY PATH UNAVAILABLE GATEWAY TARGET DEVICE FAILED TO RESPOND CRC LRC Error Response Message Timeout System setting module Not find System setting module EEPROM Error Read safe value error L Profibus lose input data NENNEN Data Error Lose Profibus output data LL GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 37 These error messages are not supported when the GW 7552 act as a Modbus slave PS Data Error a GW 7552 acts as a Modbus master If the polling speed between the GW 7552 device and the Modbus slave 1s faster than the data exchange rate between Profibus master and the GW 7552 then the Profibus master will not get all the data from the Modbus slave and therefore a diagnostic message Profibus lose input data will be send by the GW 7552 to the Profibus master b GW 7552 acts as a Modbus slave If the GW 7552 receives more telegram from the Modbus master than it transmits to the Profibus master then a diagnostic message Profibus lose input data will be send by the GW 7552 to the Profibus master c When the GW 7552 receives a data output command output byte 0 from system setting module and this command didn t increased in order ex 0 21
6. 1 B bit unsigned integer byte 2 dire dire dire Ri Mastexll FB Slavel ER Seten Cutput module QO Catput li QO Dp Seve Ouput nofi O Oud Program Files Hilechers wlonProject TM TEST LESS pb For Help press F1 TIT OPCS not available 3 Connected OPC Clients 00 Figure48 Set output data and trigger output data command in the output data area Table l6 Set output data and trigger output data command Module Byte Data type Representation Value System Output 0 Byte Hex 0x00 0x01 module Output 1 Byte Hex 0x00 Output 2 Byte Hex 0x00 Output Output 3 Byte Hex 0x00 9 OxFE module Output 4 Byte Hex 0x00 OxDC GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 50 HERTU FY 1 0 7 COMI COM status Protocol Description Id e FE Head multiple coils status Dxox for DU w E Met ID Station number Line control FC UT Byte 2 3 Reference number Byte 4 5 Bit count Close Polling made no wait Statistics Clear Statistics Timeout Commands Responses Start 200 Curent Packet Size bytes n igne Current Packet Size bytes 7 Total Packet butes 1 amp Difference Total Packet bytes a Timer mode fixed period Packet Quantity sent 2 0 Packet Quantity received 2 Interval A0 ms Polling or T
7. 1 Port Com1 Com 2 Baud rate 2400 4800 9600 19200 38400 57600 1 15200 3 Parity None Odd Even 4 Data bit 8 data bit 5 Stop bit 1 stop bit 5 2 3 Module state It can display the number of modules in the GW 7552 and display module parameters in the window of the module parameter by click the module s ICON 5 2 4 Module parameters Display module parameters of the GW 7552 5 2 5 Connection status of device and com port Module state Display connection status between the utility and the GW 7552 The green color means connected and the red color means disconnected Com Port state Display state of the PC s com port The green color means Com Port is open and the red color means Com Port is close 5 2 6 Status bar Display messages about Com Port connection the GW 7552 connection and the progress of data transmission 5 3 Memory address configuration of the module GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 57 There are 3 kinds of memory address configuration They are l Space configuration in device 2 Space configuration in profibus 3 Space configuration in modbus as shown in figure 56 S Profibus Modbus Gateway Utility Communication Safe value setting EE Help Space configuration 1n device g GW 7552 Space configuration 1n profibus Space configuration in mod bus ate Parity No Data bit tabit Stop bit nl Module 1 Module 2 Value State
8. 5P Module count GW 7552 State Com Port State Figure 64 Communication menu Step 7 Module state shows green in the Utility now it means the connection 1s complete at Profibus Modbus Gateway Utility Communication IP setting Safe value seting View Help g GW 7552 z Module 1 2 Module 2 2 Module 3 2 Module 4 Module 5 Module 6 Module 7 Module 8 Module 9 2 Module 10 GW 7552 is connected Figure 65 Com Port Setting Port fe mi Baudrate 115200 Parity Nons Data bit 8 databit v Stop bit 1 stopbit em Value State JP Modbus Type Master S Modbus Format RTU 5P 10 Value for Stop Mode Retain Last Value 3 Modbus Device ID 5 1 5P Poll interval time ms M 5P Time out value ms M 5P Module count Module State amp Com Port State Receive par T meter finis h Display connection state GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 64 6 Troubleshooting The troubleshooting list can help users to resolve the problems when using the GW 7552 If the problem still can t be solved please contact with technical staff of ICP DAS Table 17 Errors and solutions Item Trouble state Solution PWR LED indication of The power supply of GW 7552 has some problems Please check 1 the GW 7552 is always the wire connection of the power and the voltage is between turned off 10 30VDC ERR LED indication of ti
9. List of Revision Date Author Version Revision _ 2012 04 03 Raiden 140 Release GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 2 6 7 Table of Contents Introduce ik a a l osa a kk a aa Ue a n VIV EEUU Ne ei desa d MEE gus RTT TRE 5 l Modules SUPPO intel dus a na D n tea duas ata cU Este uds duse one dU E ta ae 5 LS SECH ICAUO aide Ces cotati es neh arian ke pak bd e e key es kd io a si da e ke 5 PIALOW AN er ai e ks vi r e a n ri ka a EPIS m 2 4 Block DIa9ratr Ob GW 2592 klere rit note pre ka en aie lk non aa eda ae dor one A ea 7 2 2 PINAS OTO Dll ei eias ehe non e a e oo a nse on l oo at Ud anaes ee 7 2 3 Wiring and Jumper Setting Instructions 0 0 ccc eee eee aaa aattteeteeeeeeeeeeeeeeseseeeeeo 9 24b Sette TAS Profibus Addi OS S ecoto veri eoo kak a a a e ena Ev ee mao ken eee ba ie e ee kaa 14 2 WD Stats MICO saaa a pe n ven on ekta a n uie e pe eta kan dan be vil 16 2 0 Normal Setting DIp SWI LL bot a ie ion aa IUS a A n e n e it pt a n ducunt uad 17 Communication protocol transfer theorem 19 Sel iBronb sddiexchdBbPe soo ect bo tiu ta tt Ups p abd Ino EIU pt 19 2 2 Modbus datr CXCMAN OC ye kew kra ti ki ka tha sens brew beue kt E e aw a n AW eti een asad 22 23 9 COMMUNICATION Protocol transfer areires aa ta a ORE ken eri ka vet Go kan lese a 25 COMMUNICAMON asire tk ia a is kaa fir a l is rejis esas raj ra laf s AM Ask QJPRXSK
10. 1 gt 2 255 50 the GW 7552 will think that it lose some output data of the Profibus master and a diagnostic message Lose Profibus output data will be send by the GW 7552 to the Profibus master 4 6 I O data exchange The I O data exchange is decided by Modbus type of the GW 7552 please refer section 4 3 The Configuration of the common parameters between Profibus master device and the GW 7552 Output data area of Profibus master device 1s mapped into DO AO memory of the GW 7552 and input data area of Profibus master device is mapped into DI AI memory of the GW 7552 when Modbus type is master In the other way Output data area of Profibus master device is mapped into DI AI memory of GW 7552 and input data area of Profibus master device 1s mapped into DO AO memory of GW 7552 when Modbus type is slave please refer section 3 1 Profibus data exchange 4 6 1 Input data area The maximum length of input data 1s 128 bytes Before arrange the input module the user must arrange and configure the system setting module The user can get data and control I O of Modbus slave device or get DI DO AI AO of the GW 7552 by read input module GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 38 Table 13 Input data area Module Byte Data Description Input 0 127 Data Receive data module 4 6 2 Output data area and communication command The maximum length of output data 1s 131 bytes Before arrange t
11. Click on the master area in the graphic window then Online gt Download d SyCon EXE PTM_TEST_pb 5 File Edit View Insert MME Settings Tools Window Help D S E Ja e Download Cte D Start Debug Mode FMS Diagnostic Firmware Download Image Download Firmware Reset CTF50 PB Extended Device Diagnostic Ctrl T Global State Field Live List I O Monitor i l Message Monitor FMS Monitor GW 7552 Automatic Network Scan Get Object dictionary Start Communication Stop Communication Device Info Activate Driver Read Project Information Activate Bootstraploader Downloads the configuration into the selected device PROFIBUS Config Mode Figure 43 Click Online Download to download the setting into PROFIBUS master GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 45 4 8 1 Receiving data from a Modbus master device Start the test utility MBRTU figure 44 on the PC This utility simulates a Modbus master device and is on the web site in the following directory 1 Set the COM port number of the PC 2 Set the Baud rate to 115200 3 Set the Line control to N 8 1 4 Open the connection MBRIU Y 1 07 COMI 1 stocol Description pe Read multiple coils status Oxxxx for DO Net ID Station number Fc 01 Byte 2 3 Reference number Byte 4 5 Bit count Pommepifode 2 _ Statisti
12. Communication protocol transfer In section 3 1 and 3 2 we can understand that data exchange is through DI gt DO AI AO memory space of the GW 7552 between Profibus master Modbus and the GW 7552 When the GW 7552 acts as a Modbus master device the data exchange runs continuously between Profibus master gt Modbus and the GW 7552 as shown in figure 26 27 PROFIBUS GW 7552 ASTER Modbus Devic MASTER Profibus Modbus Gateway odbus Device Modbus Master Mode n Data Max 128 Bytes Query message Module Modbus Device ID 5 Byte lb MM ae an SS aa ms hr Da Bows AME Ag Modbus Start Addr Response messaine Datu Module 2 Byte 127 exchange Cutput Duta Max 130 17 vie b Ltd data Module 32 Internal Byte 129 e merry Figure 26 GW 7552 master mode communication protocol transfers Read 04 7552 setting amp memory mapping Sale Value Setting X Utility tool GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 25 GW 7552 data exchange master mode ee ee LUE am Ip ER T ka ati FL k 1 l 3 E at a E y Sv DCA an a E m aa Es s i Cu EL LEZ a mn m L eI IC OU TI T Au EL Lt Initial Index 1 i VAs Parameterization Check Parameterization OK wm ait C s Configurtatio n Check Configuration OK Mee ee NO Ma Is GUT on le Is output command enable Note Module type WDO Outp
13. FI PROFIBUS ConfigMode Figure 39 Click Parameter Data button to open the Parameter Data window GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 43 Slave Configuration MA GW 7552 Station address li Description fSlavel Cancel vw Activate device in actual configuration V Enable watchdog control GSD fie IPDSOBOE GSD Parameter Data Parameter Data Description Common Parameter Data p bi M4 Modbus Format M 0 Safe Mode Retain Last Value 5 ModbusDevielD S N 6 Poling Modbus Device Interval ms M 500 8 Quer Message Timeout Value ms M 500 Ji aj Do Figure 40 The user needs to change Modbus type to slave for this example and click OK button Step 4 Set the GW 7552 modules as shown in figure 41 and 42 Select System setting module System setting module always has to be selected otherwise no communication can be established between the gateway and the Modbus network Select Output Relay Coil module In this example a Output Relay Coil 2 Byte module 1s selected Select Input Relay Coil module In this example a Input Relay Coil 2 Byte module 1s selected Fg SyCon EXE PTM_TEST pb ME is File Edit View Insert Online settings Toole Window Help Dag e zi ki MasterD Saton acres Fi OP Master CIFSQ PE SlaveO Sabon actress l DP Save OW 554
14. Module 3 Modbus Type Master Module 4 5 Modbus Format RTU 5P IO Value for Stop Mode Retain Last Value Module 5 SP Modbus Device ID 5 1 TT Poll interval time ms M 500 4 Time out value ms M 500 Module 7 j Module count 23 Module 8 Module 9 Module 10 Module State Com Port State GW 7552 is connected Receive parameter finish Figure 56 The menu of space configuration 5 3 1 Space configuration in device The user can select check box of the module to show memory address configuration of DI DO AI AO in the GW 7552 as shown in figure 57 Space configuration 1n device Select module Modulet lw Module fw ModulelO i Modulel fw Modula Modulel3fw kModuleldfw Modulel5 w Module16 w Modulel fw Module18 w ModulelS fw Module20lw Module2liw Modulez2lw Module23 Modules Module25 Modue26 Madule2z 7 M Figure 57 Space configuration in device GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 58 5 3 2 Space configuration in profibus The user can select check box of the module to show memory address configuration of I O data area in the Profibus master station as shown in figure 56 Space configuration in profibus Select module w Modue9 fw Modulelll Moduleli lw Modulel2lw Modulel3 w Modulel4lw Modulel5 fw Module1l6 w Modulel 7 lw Modula Modulel9 w Module20lw Modulez1liw Madule22 w Module23 1 wy espo le28f ModuleZ9f M pat lest
15. Wm eae te C7552 jm onneting o be PROFIBUS 2 GW 7552 is always turned on PROFIBUS master station The configuration and address of GW 7552 1n the PROFIBUS master station are not correct ERR LED indication of the It means the GW 7552 1s in setting mode and connects with Utility Please close Utility and set the GW 7552 to operation GW 7552 1s flashing fast mode please refer section 2 6 Normal Setting Dip Switch and section 4 6 2 Output data area and communication command 4 ERR LED indication of the It means the GW 7552 has diagnostic messages Please check GW 7552 is flashing slow diagnostic messages in the Profibus master station a Please confirm the GW 7552 is working in operation mode and avoid clearing diagnostic message by communication command please refer section 2 6 Normal Setting Dip Switch and section 4 6 2 Output data area and communication command b Please confirm the connection between the GW 7552 and Modbus device c Please confirm Com Port setting of the GW 7552 please Profibus master station can refer section 4 3 The Configuration of the common not communicate with the parameters the same as Com Port setting of the Modbus Modbus device when device 5 RUN LED of the GW d Please confirm module ID of the GW 7552 please refer GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 7552 is light and ERR LED of the GW 7552 1s dark section 4 3 The Configurati
16. of Utility and GW 7552 step 3 Set bit 2 of byte 1 to High in output data area of the Profibus master station set the GW 7552 to setting mode please refer section 4 6 2 Output data area and communication command Open Utility exe on PC THERE RAZ St E TI88E i a Microsoft Visual Studio 6 0 a Dr eye SFP A a Microsoft Visual Studio 2005 as Avion System Configurator Microsoft Office an Power Management Aa HHD Free Serial Port Monitor a skype ka Se ai ICPBAS 3 GATEWAY a p rur e aes maiis PEE TM ta LEE corr s e k E e un u D n LEM gen D UN a C Figure 63 Open Utility GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 63 step 5 Set Com Port communication setting of Utility please refer section 5 2 2 Com Port settings the same as Com Port setting of GW 7552 please refer section 4 3 The Configuration of the common parameters step 6 Click Communication Connect button in menu Profibus Modbus Gateway Utility UEM pate value setting View Help Connect Com Port isn t open m Com Port Setting Port Comi vi Baudrate 115200 vi Parity None vi Data bit s databit vi Stop bit fi stopbit vi Item Wale State 5P Modbus Type j Modbus Format 5P I O Value for Stop Mode 5P Modbus Device ID 5 5P Poll interval time ms IM 5P Time out value ms M
17. t a Tus i T P r FIN ko i Fj F Fi if aW d ri a GW 7552 klas X1 daa capi AVIZE Syice LE CHA R85 27204 22 08855 yh Bey CA ena ba r k a CEPA ou Jii Sin igh Speed iCcapicr bzlrizr Fresccrizu MSN 3000vDC Isolation on PROFIBUS fy EA ree ki 1 m a l M i e file Hit T BS A Mil Baha nuit 3 9 A a a m m g g E T z o4 PID Figure 13 LED position 2 6 Normal Setting Dip Switch There 1s a dip switch on the back of the GW 7552 module as shown in Figure 14 The dip switch is used to set the GW 7552 module works in operation mode or setting mode In the normal situation it needs to set the dip switch to the Normal position In this case the GW 7552 module can communicate with Modbus devices When the user sets the dip switch to the Setting position the GW 7552 module can communicate with the utility tool to set the safe value KA AAA A Setting H Normal ACRLTACUASA AGN a vvv Figure 14 Dip switch of the GW 7552 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 17 PS There are two kinds of methods to enable the setting mode of the GW 7552 The user can change the position of the dip switch or set the control bit please refer section 4 6 2 Output data area and communication command to enable the setting mode of the GW 7552 as shown in table 11 Table 11 Mode of GW 7552 SM control bit 0 SM control bit 1 Non Ma anl
18. 127 Utility tool GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 27 GW 7552 data exchange slave mode ji ki ER nm d Au on rower In i Parameterization Check Parameterization OK Ww ait C FG gt Configurtation De Check Configuration OK YO Is output command enable Note Module type W DO Cutput Relaw Coil module Se aE SAT Hes x AD Ou Spats ks Capy data to Copy Profibus O P data to RDI RDO Input Relay Coil module M mory Internal DI amp AI memory RALRAO Input Register module ws No Is any modbus request Is any reques from com port Process modbus command and refresh Internal DO amp AO memory Mopy Caka D Copy Internal DO amp AO FUIS memory to Profibus IP data Figure 29 GW 7552 slave mode flowchart GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 28 4 Communication 4 1 Field of application A master station can be a PLC PC or any other smart device The system can be a mono master system Figure 30 or a multi master system Figure 31 The GW 7552 enables the integration of the Modbus devices into a PROFIBUS DP network Device 03 29 ceooocooj lag W as v O i7550 P E PROFI 8455 4 PROFIBUS GW 7552 PROFIBUS PROFIBUS Device 02 PROFIBUS Device 31 Device 30 Figure 30 Mono master system GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAG
19. 2 Modius B 15 VC data Byte i Byte 1 Internal s memory r CA Te 1 BY Le Figure 22 GW 7552 output data to modbus slave devices GW 7552 Profibus Modbus Gateway Modbus Master Mode Modbus Device Module Modbus Device ID Module Type KDI i Qum aem n fan M 7000 Device addr 1 T Response s Profibus Data Base Addr ela Query 7 Modbus amp 15 LO data Byte 0 Byte 1 Internal Y Tem ory Figure 23 GW 7552 receive data from modbus slave devices GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 23 When the GW 7552 acts as a Modbus slave device it can receive query message from Modbus master device and then saving to internal DO AO memory space It can also send response message to Modbus master device through internal DI AI data as shown in figure 24 25 GW 7552 Profibus Modbus Gateway Modbus Slave Mode Modbus Master Device Modus Device address 1 joa mes me mee m ESE Bagaao0 HE Internal memory Figure 24 The GW 7552 receive data from Modbus master device GW 7552 Profibus Modbus Gateway Modbus Slave Mode Modbus Master Device ae nan ncn wm Response message Doc gan BG Modbus amp 15 Internal E LO data Query message read DT Figure 25 The GW 7552 output data to Modbus master device GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 24 3 3
20. BLS GATEWAY UTILITY on your computer WARMING This computer program is protected by copyright law and international treaties Unauthorized duplication or distribution of this program or any portion of it may result in severe civil ar criminal penalties and will be prosecuted to the masimum extent possible under the law Cancel Figure 50 install the utility Step 3 Click the Next button to continue If you want to change the installation destination click Browse button to set the installation path GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 53 ig PROFIBUS MODBUS GATEWAY UTILITY Select Installation Folder The installer will install PROFIBUS MODBUS GATEWAY UTILITY to the following folder Ta install in this folder click Next To install ta a different folder enter it below or click Browse Folder C AProgram Files CPDAS PROFIBUSIGATEWAY Install PROFRBUS MODBUS GATEWAY UTILITY Far yourself ar for anyone who uses this computer CO Evervone 5 Just me ee Ca Figure 51 set the installation path step 4 Click the Next button to confirm installation E PROFIBUS MODBUS GATEWAY UTILITY Confirm Installation The installer is ready to install PROFIBUS MBDBLIS GATEWAY UTILITY on your computer Click Next to start the installatian tees Ca Figure 52 Confirm installation GW 7552 PROFIBUS MODBUS GATEWAY User Manual Ver
21. Double click icon For Help press F1 PROFIBUS Config Mode Figure 41 Double click the GW 7552 icon to open the Slave configuration window GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 44 FS SyCon EXE PIM TEST pb Das e si Slave Configuration General Device GW 7552 Station address 1 Description Slavel lv Activate device in actual configuration lv Enable watchdog control GSD file IPDSOBOE GSD Max length of in outputdata 258 Byte Length of in output data 6 Byte DPV1 Settings Max length of input data 128 Byte Length of input data 2 Byte Assigned master Max length of output data 130 Byte Length of output data 4 Byte Station address 0 Max number of modules 32 Number of modules 3 Master Identifier 0 CIFSO PB System setting Output Relay Coil 1 Actual slave Output Relay Coil Z Station address 1 Output Relay Coil 3 SlaveD Output Relay Coil 4 1 GW 7552 a EI mu n s n net Siorax Module Symbol type i Adar f Len type 0 Addr 0 Lem Append Module l l System Moduled QB z 2 1 Output Module2 QB 2 2 Remove Module 3 l Input Module3 IB 0 z T t Module Predefined Modules vi Symbolic Names For Help press Fl PROFIBUS Config Mode Figure 42 Select modules Step 5 Close the Slave Configuration window by clicking the OK button Step 6 Now the setting done by the configuration tool has to be downloaded to the Profibus master
22. E 29 Device 05 29 600000 i i 7550 PROFI 8455 e Worse Wo GWISS2 PRODE Device 30 Figure 51 Multi master system 4 2 GSD file The characteristic ex baud rate message length number of input output data of each PROFIBUS DP device 1s described in the GSD file The GSD file of the GW 7552 is in the ICP DAS companion CD ROM PATH gt CD PROFIBUS GATEWAY GW 7552 GSD The user can copy GSD file IPDSOB87 gsd and the Bitmap file ICP 7552 bmp 1 7552 bmp to the PROFIBUS configuration tool 4 2 The example of how to load GSD file In the following examples the CIF50 PB PROFIBUS master card from Hilscher is used The configuration and communication is done by the program SyCon provided by Hilscher Step 1 Copy the GSD file IPDSOBS7 gsd and the Bitmap file ICP 7552 bmp 1 7552 bmp from CD of the GW 7552 module into the Profibus configuration tool GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 30 File CopyGSD Directory gt CD PROFIBUS GATEWA Y GW 7552 GSD Step 2 Click insert slave button in the PROFIBUS configuration tool F 2yCon EXE 1 7550QC ph MasterD Sabon address PSDP Master CIFAQ PB Inserts a new Slave PROFIBUS Config Mode Figure 32 insert PROFIBUS slave device Step 3 Select GW 7552 and click Add button to assign the GW 7552 Cu a RIM RED Sel Dae e zt ei
23. GW 7552 PROFIBUS MODBUS GATEWAY User s Manual GW 7552 Ti PROFIBEUSTEADHISUS GATEWAY s Pal ji da Enpe PT SS D n Sann Cie Musas ETU ASCII a B Soman Medias Haarr Slav Paes band ren aca ae imide bias SO dota length gt 20124 Brice L w LI Weehosd COM 1R5 212608022 08855 7 a 5 i i ANS Vorige a iik of COO E hwe 155100 gs Par a n if High Speed iCennicer kalen Freezcriza Fi if N 3OCHTV DIC Isolation ee PROFIBUS Li un p 7 I pe i i i e F a ccs E E Ze High Quality Industrial Data Acquisition and Control Products GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 1 Warranty All products manufactured by ICP DAS are under warranty regarding defective materials for a period of one year from the date of delivery to the original purchaser Warning ICP DAS assumes no liability for damages resulting from the use of this product ICP DAS reserves the right to change this manual at any time without notice The information furnished by ICP DAS 1s believed to be accurate and reliable However no responsibility is assumed by ICP DAS for its use or for any infringements of patents or other right of third parties resulting from its use Copyright Copyright 2012 by ICP DAS All rights are reserved Trademark The names used for identification only may be registered trademarks of their respective companies
24. POLdDDHOdHoloeeseerextvemes ee at oti w ti pea e a kn a lo pe e pare e a n le pa g ile 29 A YO ID NO Si v t be tik t ah aba fl ai ka a E a a ke a ese ne a tank N 30 4 3 The Configuration of the common parametefS ee eeee eee eee tteteeeeeeeeeeeeeeeseseeeeos 33 44 The Conleuraton or the modules runc pt kane a ee IR penk AE A pe tX HE 34 do DINCHOSHCTNSS ASE abi ipia e a n a e pe a a e ao io I E cao 34 AO DOdata exc lan9e isses w dako scans kt a n S EUCH PEDRO aA S MOD Ad NU CONSE Adds 38 4 7 Establish connection with GW 7552 cuit na aka an oae e ERN RR Rui eaa Ra UR i ERR E alude 40 4o j Datexchanee example oes desea O en Sie uu UIS Gui a ctetu pe 4 Application OF Utility io lise tpa sa e oa Us CREUSE E ES pen s RE EXE E EO Sak JAN CITY cc 53 2 JOU MAYO L HOD eoe aie ai a a n iad ee io n eee ak suus EN eae e po 56 5 3 Memory address configuration of the module cc ccc cece ccc teen eee e eee e eee e ena 57 JA Dale VAIS SC MING censes etii dd a aa Rad E a a T 60 2 Establish connection wIUT G W 1592 serioan e bk a ai E a ke E 62 TTFOUDICSNOOCUNAE l kaa eki kib a af man ar ok v al e l av a lao netna DIMENSIONS krak ja a ok dl kan T 9822 9900 00 0 9028002250982 000 52 845 DO GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 3 1 Introduction Profibus and Modbus are two kinds of famous protocols and are wildly used in the fields of factory and process automation The G
25. W 7552 is a Profibus to Modbus gateway By using this module users can easily put the Modbus devices into Profibus network Figure 1 shows an application example for the GW 7552 module 4 wm 17 LL 3 GW 7552 YA PROFI 8455 Modbus RTU ASCII q 22 OM D M 7000 M 7000 M 7000 isk Figure I Application architecture of the GW 7552 module The GW 7552 Gateway is specially designed for the slave device of PROFIBUS DP protocol In the Modbus protocol application the GW 7552 can be a Modbus master device or slave device The Modbus devices can exchange data with the Profibus master device via the GW 7552 module The main features and specification of GW 7552 are described as below GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 4 1 1 Features 16 Bit Microprocessor inside with S0M Hz siemens SPC3 PROFIBUS controller supports PROFIBUS DP VO slave PROFIBUS transmission rate detect automatically Max transmission speed up to 12M bps for PROFIBUS and 115 2K bps for COM Port Supports Modbus RTU ASCII format Supports Modbus master slave mode Supports safe value setting COM Port driver has IK bytes QUEUE input buffer amp 512 bytes QUEUE output buffer Max length of output input data 1s 131 128 Bytes Built in self tuner ASIC controller on RS 422 485 port 2500Vrms High Speed 1Coupler Isolation Protection for PROFIBUS network 3000VDC Isolation Protection on the PROFIBUS side Provide LED indicator
26. al Version 1 40 Apr 2012 PAGE 12 rate and range for a cable with the following properties Impedance 135 165Q Capacity lower than 30 pF m Loop resistance lower than 110Q Km Wire diameter greater than 0 65mm Core cross section greater than 0 34mm O1 VON Table 7 Transmission rate decreasing with increasing transmission distance Transmission Rate Kbps Transmission Distance per Segment meter 9 6 19 2 45 45 93 75 1200 1500 3000 6000 12000 In order to minimize the reflection effect of signal transmission both ends first node and last node of a PROFIBUS segment needs to be equipped with an active terminal resistor as shown in figure10 A standard PROFIBUS connector is usually already equipped with a terminal resistor The user therefore only has to switch on the resistor of the devices stationed at the ends of a segment as shown in figurel 1 Device N Figure 10 PROFIBUS connection GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 13 Terminator ON Terminator OFF Terminator Switch Se Figure 11 PROFIBUS connector The number of stations in a Profibus network 1s restricted to 126 According to the PROFIBUS specification up to 32 stations are allowed per segment A repeater has to be used to link the bus segments 2 4 Setting the Profibus Address The station address of GW 7552 can be set by using either the dip switch or by writing it direct
27. aster or Modbus slave in a local RS 422 network Depending on whether the gateway acts as a Modbus master or as a Modbus slave and on the number of devices connected to the RS 422 network device the four jumpers provided by the module has to be set according to table 5 The jumpers set the pull high and pull down resistors for the RS 422 port Figure 6 Figure 7 GW 7552 RS 422 port RS42 Ti PING H o RSA RA Rs TH PINS F po RS RH RS42 K PING H e a Rodez TH RE 2RM PINF KO R5 422 TH Figure 5 RS 422 connection GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 9 Table 5 Jumper position for the RS 422 port Enabled default The GW 7552 is the master in RS gm cw luec iis 422 bus or e 8 jee eee the number of devices connected to J Gul dg 2 Srl an the RS 422 bus 1s less than 10 she JP Z JP3 JP4 Disabled The GW 7552 is a slave in RS 422 wg M the number of devices connected to 321 321 321 321 the RS 422 bus exceeds 10 JP 1 IP JPS JP4 GW 7552 Siy R KO JPI j perm RS TX PIN 4 RS A4Z2 TA PINS RS RXA PING RS A4Z2 RA PIHT Figure 6 Configuration of pull high low resistor for the RS 422 port GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 10 JP ENABLE JP DISABLE uu 3 21 3 1 Figure 7 The positions of pull high low resistors in GW 7552 module 2 3 3 RS 485 connection The RS 485 w
28. at in these modules The data may be read and written by different modules at this time it may make the data transmit and device control error easy because address configuration and Modbus ID overlap Space configuration in mod bus Select module 1 i wel fw Module fw Modules W Moduled lw Module fw Module6 Module W Modules w Maodule3 fw Modulel0 lw Modulelll Maodulelz amp 4 Modulel 3h Modulel4 ModulelSiy Module16 w Module17 w Modulel8fw Madule19 w Module2Dlw Module21lfw Module22 lw Maodule23 Figure 59 Space configuration in modbus 5 4 Safe value setting There are 3 kinds of safe value setting They are 1 Open a new setting 2 Load from file 3 Load from device as shown in figure 60 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 60 Profibus Modbus Gateway Utility Communication RiGee ante View Help New setting 4 Load from file Load from device Port Baudrate Parity Module 1 m Port Setting Data bit e i Stop bit Module 2 value State P Modbus Type Master Module 3 Module 4 5P Modbus Format RTLI 3 TO Value for Stop Mode Retain Last Value Module ji Modbus Device ID S 1 EP Poll interval tine ms M 500 Module 6 ms M 5P Time out value ms M 500 Module 7 5 Module count 23 Madule 8 Module 9 Module 10 Module State amp Com Port State GW 7552 is connected Receive parameter finish Figu
29. ault setting 1s being used in the other parameters for this example Please refer to section 4 3 the Configuration of the common parameters The users can set parameters as shown in the below GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 42 F 2yCon EXE ETH TEST ph MasterQ Sabon actress L Fi De Master CIFSQ PB Slave Bon aggress IP Save Double click icon isi Help press F1 PROFIBUS Config Mode Figure 38 Double click the GW 7552 icon to open the Slave configuration window F2 SyCon EXE PTM_TEST pb Das e l LM Slave Configuration General Device GW 7552 Station address 1 E f i Description Slavel Cancel V Activate device in actual configuration 3 gt jw Enable watchdog control GSD file IPDSOBOE GSD Max length of in outputdata 258 Byte Length of in output data 6 Byte DPV1 Settings Max length of input data 128 Byte Length of input data 2 Byte _ Assigned master Max length of output data 130 Byte Length of output data 4 Byte Station address 0 Max number of modules 32 Number of modules 3 Master Mesue pms ouepura in our raenvatier A D7CIBDTE System setting Output Relay Coil l i m Actual slave Output Relay Coil 2 Station address 1 Output Relay Coil 3 Slave 1 GW 7552 l System Moduled E De l Output Modulez Remove Module pi Input Hodule3 IB Insert Module Predefined Modules vi Symbolic Names For Help press
30. cs lear Statistics Fi ianeOul Commands Res Sel St Stop 200 Curent Packet Size bytes ES d eus Packet Size bytes ES Total Packet bytes g9 Difference Total Packet bytes D am Timer mode fixed period Packet Quantity sen 7 sss Quantity received 5 _ i Interval 50 Polling or Timer mode Date Time Polina Mode Timing ms a Start time Time Start Max 000 Average Stop time n Time Stop Min i 000 LI Command Commands M With CRC Responses artists Lists Exit Est Progam Figure 44 MBRTU Utility Send Command to write DO of the GW 7552 The user needs to input command 01 OF 00 00 00 10 02 FF FF here and click Send Command gt button to send Modbus command 01 OF 00 00 00 10 02 FF FF E3 90 and then MBRTU can receive response message 01 OF 00 00 00 10 54 07 The user can find byte 0 1 of the input data area in the configuration program SyCon have changed into FF at this time as shown in the below GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 46 HERTU Y 110 7 COM COM status gt Protocol Description FC Read multiple coils status sx for DO Request Byte 0 Met ID Station number Byte 1 F O1 Byte 2 3 Reference number Byte 4 5 Bit count r Polling mode no wait r Statistics Clear Statistics F j Imeout M Commands
31. ction between Modbus slave and the GW 7552 is interrupted e O safe mode Switch Safe Value The GW 7552 will set the internal DI and AI data to safe value and send safe values to Profibus master device e I O safe mode Retain Last Value Internal DIO and AIO data retain last value GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 33 When GW 7552 acts as a Modbus slave Modbus Type Slave i Data exchange between Profibus master and GW 7552 is interrupted I O Safe Mode will be activated when the data exchange between Profibus master and GW 7552 is interrupted e O safe mode Switch Safe Value The GW 7552 will set internal DIO and AIO data to safe value e O safe mode Retain Last Value Internal DIO and AIO data retain last value ii Connection between Modbus master and the GW 7552 is interrupted Internal DIO and AIO data retain last value received Please refer section 5 4 about the safe value settings c Byte order is an important factor related to the memory allocation Big endian byte order Motorola format allocates more significant byte in lower memory address On the other hand little endian byte order Intel format allocates more significant byte 1n higher memory address d When Output Data Mode 1s Auto the GW 7552 will update the value of the output and input module automatically When Output Data Mode is Manual the GW 7553 will update the value of the input
32. dip switch to 255 in the power off state Switching the module on is forcing the module to change its address in the EEROM to 126 In the next step switch the module off and change the dip switch setting to any value from 126 to 254 This step is necessary in order to prevent the module to change its address in the EEPROM to 126 every time it is powered on The configuration tool can now assign the slave a new address PAGE 15 2 5 LED status indicator The GW 7552 provides three LEDs to indicate the statuses of the GW 7552 module The position of LEDs and descriptions are shown in table 10 and figure 13 Table 10 LED status description LED Name Status Description When the GW 7552 acts as a Modbus slave device and flash receiving query message form Modbus master device PWR led will flash Power supply 1s ok The firmware has loaded Power supply has failed When the GW 7552 connects with the utility tool it will flash fast flash once about 55ms When the GW 7552 has diagnostic message it will flash slowly flash once about 220ms Connection error between Profibus master and slave or Profibus system has not been configured correctly Normal operation PROFIBUS system has been configured correctly Data exchange mode Normal operation GW 7552 module is not in a data exchange mode GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 16
33. e 16 HERTU FY 1 0 7 COMI COM status Pratocol Description Id FCI Head multiple coils status Dsxxa Far DO Io Request Byte 0 Met ID Station number Line control Byte 1 FC O1 Byte 2 x Reference number Byte 4 3 Bit count i Clase Polling mode na wait Statistics Clear Statistics Timenut Commands Responses Start 200 Curent Packet Size butes a n Current Packet Size bytes 7 Tatal Packet butes a Difference Total Packet bytes 7 Timer mode fixed period Packet Quantity sent i 0 Packet Quantity received 1 Interval 50 MIS Polling or Timer made Date Time Polling Mode Timing ms Start Start time Time Start Max anu Average Stop time Time Stop Min Moris ale 01 02 00 00 00 10 Commands I with CAC Responses 01 0200000010 79 CE 01 02 02000069 B8 Clear Lists Exit Program Figure 47 Send Modbus command to read DI of the GW 7552 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 49 a SyCon EXE Network View g File View Online Settings Window Help Seeks Logical Network view Tag List IC Watch Pro ffl PTM_TEST_LESS_pb PTM_TEST_LESS pb Bi Master xL Diagnostics AA Slavell HI Syster EI Input module Output OutpotDD2 O Output l Cutput module Fai 10 Watch Settings not saved yet Slavell Output module O OutputD01 B bit unsigned integer byte 0 B bit unsigned mteger byte
34. erate state While DP Master changes to operate mode GW 7552 will initial the modules Then GW 7552 allocates the memory space and waits for Set Prm telegram The next step 1s waiting for Check Cfg telegram in order If there is no error occurs GW 7552 proceeds into data exchange state Users can observe the status indicator LED to know the state of GW 7552 At the meantime if there 1s any error occurs GW 7552 will return to wait parameterization 4 8 Data exchange example In this example a Modbus master device simulated by a PC program sends query GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 41 message and receives response message from a Profibus master via the GW 7552 gateway In the following examples the CIF50 PB PROFIBUS master card from Hilscher is used The configuration and communication is done by the program SyCon provided by Hilscher Step 1 Copy the GSD file and assign the GW 7552 a valid station address Please refer to the section 4 2 GSD file Step 2 Connect the RS232 port of the GW 7552 module to a COM port of the PC and the Profibus port to a Profibus master Figure 37 PROFIBUS DP MASTER INTERFACE CARD PROFIBUS DEVICE 0 MASTER PROFIBUS SOFTWARE GW 7552 SyCon Modbus FROFIBUS Utility DEVICE 1 SLAVE Figure 37 Wiring diagram between PC and GW 7552 Step 3 Set the parameters of the GW 7552 We just need to change Modbus type to slave and the def
35. ers e Modbus Slave Device ID M 0 247 e Start Address M 0 65535 e Change Word Order Enable Disable Even module only C Input Relay Coil module parameters e Modbus Slave Device ID M 0 247 e Start Address M 0 65535 e NO of Relay Coil M 8 n 1 1 8 n Bits e Module Type M Read DI DO n Module size Byte D Input Register module parameters e Modbus Slave Device ID M 0 247 e Start Address M 0 65535 e Module Type M Read AI AO e Change Word Order Enable Disable Even module only Example 1 If the user wants to read a Modbus digital input module DI module Device ID 1s 1 data address is 10010 10019 and data count is 10 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 35 In this case the user can select an Input Relay Coil gt 2 Bytes module module parameters are shown in the below Input Relay Coil module parameters e Modbus Slave Device ID M 1 e Start Address M 9 e NO Of Relay Coil M 10 e Module Type M Read DI Example 2 If the user wants to write a Modbus analog output module AO module Device ID 1s 2 data address 1s 40001 40004 and data count 1s 4 In this case the user can select an Output Register 4 Words module module parameters are shown in the below Output Register module parameters e Modbus Slave Device ID M 2 e Start Address M 0 e Change Word Order Disable PS a Relay Coil module is di
36. f RS 422 8 N A 9 RX Receive Data of RS 232 10 TX Transmit Data of RS 232 11 GND GND of RS 232 12 N A 13 VS V of Power Supply 10 to 30VDC 14 GND GND of Power Supply Table 4 PROFIBUS DB9 Female Connector Description N A N A Non inverting Bus Line Isolated DE output for use in PROFIBUS applications where the state of the isolated drive enable node needs to be monitored Power supply ground for the first node and the last node 5V Power Supply for the first node and the last node N A Inverting Bus Line N A GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 8 2 3 Wiring and Jumper Setting Instructions The GW 7552 module supports PROFIBUS to Serial Port communication It is recommended to use only one serial port RS232 RS485 or RS422 of the Gateway at the same time The following section describes the necessary steps to be taken to connect one of the three COM port types to a Modbus network 2 3 1 RS 232 connection The RS 232 port of the GW 7552 has got three pins The wiring of the RS 232 device with the RS232 port of the GW 7552 1s shown in figure 4 GW 7552 RS 232 COM port RS 232 device o Rss RR FINS TA PING Ex PIHE RS 22 TH PIN 1D GROUND PIN 11 GNO PINS Figure 4 RS 232 wiring diagram 2 3 2 RS 422 connection The RS 422 wiring connection is shown in figure 5 The GW 7552 gateway can be a Modbus m
37. gital module DI DO module the unit is Byte Register module 1s analog module AI AO module the unit 1s Word b Modbus Slave Device ID It is a Modbus slave device address c Start Address The GW 7552 and Modbus slave device exchange data from this starting address d NO of Relay Coil It is data size that the GW 7552 and Modbus slave device exchange e Module Type The user can select data type for data exchange by this setting Write DO WDO Write Digital Output Write AO WAO Write Analog Output Read DI RDI Read Digital Input Read DO RDO Read Digital Output Read AI RAI Read Analog Input Read AO RAO Read Analog Output f Change Word Order When this setting 1s Enable the GW 7552 will GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 36 change the data between the high word and low word for reading easily g M means the parameter is effective when Modbus type of GW 7552 is master 4 5 Diagnostic messages The GW 7552 can show maximally 10 diagnostic messages at the same time If the number of the diagnostic messages is bigger than 10 the GW 7552 will not process other diagnostic message The diagnostic messages have four types They are Module Error System Setting Module Error EEPROM Error and Input Data Error The diagnostic messages are shown in table 12 Table 12 diagnostic messages Description ILLEGAL FUNCTION ILLEGAL DATA ADDRESS ILLEGAL DATA VALUE
38. he output module the user must arrange and configure the system setting module The first three bytes belong to communication commands as shown in table 14 The user can change data and I O state of Modbus slave device or DI DO AI AO data of GW 7552 by modify data of output module Table I4 Output data area Byte Bit Foston Description 7 6 s 4 s 2 t1 0 System module Output 4 130 Output data module e Data output command byte 0 a When Modbus type is master When this byte 1s changed Profibus master device will send data of output module to DO AO data of GW 7552 and then GW 7552 will send query message to Modbus slave device for change data or output state of Modbus slave device b When Modbus type 1s slave When this byte 1s changed Profibus master device will send data of output module to DO AO data of GW 7552 PS When the user use this byte to trigger data output command the user must increase this byte in order ex 0 21 1 gt 2 255 20 or else the GW 7552 will send a diagnostic message to the Profibus master please refer section 4 5 Diagnostic messages GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 39 e Control bit byte 1 DC bit 0 When this bit 1s set DC 1 diagnostic messages send by the GW 7552 module will all be cleared SM bit 1 When this bit is set SM 1 the GW 7552 will enter setup mode The utility can communicate with the GW 7552 in this mode When this b
39. imer made Date Time Polling Mode Timing mz mm Start ai Time Start os DOU Average Stop time Time Stop Min 100 O00 Command Commands i with CAC Responses 01 0200000010 79 CE jon 0z 02 FE DC FS 41 Exit Program Figure 49 Send Modbus command to read DI of the GW 7552 and receive data OxFE OxDC PS Modbus command Query message TE EERE E Hi Lo Hi Lo check opm foo fw foo fo fo lee Response message DA FC BC DATA Le check GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 51 DA Device Address 0x01 FC Function Code 0x02 read DI SA H1 Start Address Hi byte 0x00 SA Lo Start Address Lo byte 0x00 NO H1 No Of points Hi byte 0x00 NO Lo No Of points Lo byte 0x10 BC Byte Count 0x02 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 52 5 Application of Utility 5 1 Install Utility Step l Download the Profibus Modbus gateway utility setup file from the CD ROM disk following the path of CD profibus gateway gw 7552 utilities Y or the web site ftp ftp 1cpdas com tw pub cd fieldbus cd profibus gateway gw 7552 utilities Step 2 Execute the Setup exe file to install the Profibus Modbus Gateway Utility iy PROFIBUS MODBUS GATEWAY UTILITY Welcome to the PROFIBUS MODBUS GATEWAY 1 a UTILITY Setup Wizard The installer will quide pou through the steps required to install PR FIBUS M D
40. ion 1 40 Apr 2012 PAGE 32 4 3 The Configuration of the common parameters GW 7552 has eleven common parameters The user can configure the common parameters to set the communication mode and data format by the PROFIBUS configuration tool The common parameters are described below COM Port baud rate 2400 4800 9600 19200 38400 57600 115200 COM Port parity None Even Odd COM Port data length 7 8 data bit COM Port stop bit 1 2 stop bit Modbus Type Master Slave Modbus Format RTU ASCII I O Safe Mode Retain last value Switch safe value Byte Order Little Endian Big Endian Output Data Mode Manual Auto Modbus Device ID S 1 247 Polling Modbus Device Interval ms M 1 65535ms Query Message Timeout Value ms M 1 65535ms PS a When stop bit of Com Port is 2 data bit of Com Port must be 7 or else stop bit of Com Port will be set to 1 b I O Safe Mode When GW 7552 acts as a Modbus master Modbus Type Master i Data exchange between Profibus master and GW 7552 is interrupted I O Safe Mode will be activated when the data exchange between Profibus master and GW 7552 is interrupted e g no physical connection Profibus master leaves the data exchange mode etc e I O safe mode Switch Safe Value The GW 7552 will set internal DIO and AIO data to safe value and send the safe values to the Modbus slave device e O safe mode Retain Last Value Internal DIO and AIO data retain last value ii Conne
41. iring diagram is shown 1n figure 6 The GW 7552 gateway can be a Modbus master or Modbus slave in a local RS 485 network Depending on whether the gateway acts as a Modbus master or as a Modbus slave and on the number of devices connected to the RS 485 network device the four jumpers provided by the module has to be set according to Table 6 The jumpers set the pull high and pull down resistors for the RS 485 port Figure 9 GW 7552 RS 485 Port j RS 5 D PIN Z Figure 6 RS 485 connection GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 11 Table 6 Jumper position for the RS 485 port mem The GW 7552 1s the master 1n RS feed 485 bus or the number of devices connected to the RS 485 bus 1s less than 10 Disabled The GW 7552 1s a slave in RS 485 bus or the number of devices connected to the RS 485 bus exceeds 10 GW 7 552 iun JP1 Iza ES 485 D FIN 1 4 ES 485 D PIN Z Figure 9 Configuration of pull high low resistor for the RS 485 port 2 3 4 PROFIBUS Connection The PROFIBUS interface of the GW 7552 1s a DB9 female connector The connector uses the standard Profibus 9 pin assignment It is recommended to use a standard PROFIBUS cable and connector DB9 male As with every serial bus the rate of safe data transmission in a Profibus network decreases with increasing distance between master and slave Table 7 shows the transmission GW 7552 PROFIBUS MODBUS GATEWAY User Manu
42. it is 0 SM 0 the GW 7552 will enter normal operation mode The GW 7552 can communicate with Modbus device in this mode Bit 2 7 The remaining bits have to be set to zero e Output module select byte 2 When this byte is 0 and the user change data output command byte 0 it will trigger all data output command of output modules When this byte isn t 0 and the user change data output command byte 0 it will trigger single data output command of the output module and this byte represent module address of the output module ex byte 2 3 it represent that the user want to trigger data output command of the third module 4 7 Establish connection with GW 7552 Before establishing a connection between the DP Master and the GW 7552 user should execute the following steps first GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 40 qW 7552 Start IPDSO BE 7 gsd Wait Prm Load GSD into me Master Check and Applicd Prm Not om ok 1 C NS rens Mot OK Wait Cte Y Setting Prin Data Check Cfg OK OS WD Timeout Wait DATA EX RUIN Establish Data Exchange wm Connection among Master and Tu GW 7552 Rud ae a a a Figure 36 Establish connection with GW 7552 First users must load the electronic device description file GSD file of the GW 7552 into the DP Master and then set the parameters Finally change your DP master from Offline state to Op
43. it will save data that receives from Profibus master device to internal DO AO memory space as shown in figure 17 18 PROFIBUS GW 7552 MASTER Profibus Modbus Gateway Modbus Master Mode Output Data Max 130 Bytes Module 1 i Module Tvpe W DO Data Lengi h Bytes Byte 2 Byte 3 Internal men ony Figure 17 the output data of Profibus master device send to the GW 7552 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 20 PROFIBUS GW 7552 MASTER Profibus Modbus Gateway Modbus Master Mode Input Data Max 128 Bytes Module 1 Modbus Device ID Module Type RDI Byte l e Data Length 2 Bytes Byte Internal Memory Figure 18 the input data of Profibus master device receive from the GW 7552 When the GW 7552 acts as a Modbus slave device it will send DO AO data to input data area of Profibus master device and it will save data that receives from Profibus master device to internal DI AI memory space as shown in figure 19 20 PROFIBUS GW 7552 MASTER Profibus Modbus Gateway Modbus Slave Mode Output Data Max 130 Bytes Module 1 erm T De dieu Lade Base Addr 2 Byte 2 Byte 3 Internal memory Figure 19 the output data of Profibus master device send to the GW 7552 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 21 PROFIBUS GW 7552 MASTER Profibus Modbus Gateway Modbus Slave Mode Input Data Ma
44. ly to the EEPROM The dip switch covers a range from 0 to 255 The valid address range of a Profibus station spans from 0 to 126 Table 8 shows three examples of setting the station address by using the dip switch The dip switches are accessed by opening the modules housing Figure 12 Table 9 explains which address will be used by the module after power on if the dip switch address setting differs from the address stored in the EEPROM Table 8 Dip switch setting example DIP SWITCH SW1 Station address GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 14 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 Table 9 The Address setting of the GW 7552 1 The address setting of the EEPROM is ignored 0 125 2 The address can not be set by the PROFIBUS configuration tool 1 The address setting of the dip switch is ignored 126 254 2 Ifthe address in the EEPROM is 126 the PROFIBUS configuration tool can set a new address and save it to the EEPROM 1 Slave address in the EEPROM is set to 126 0 2 5 aB al i m if Lan y 9443 44 45 45 A n n n n n n FF l Figure 12 DIP switch Each slave must have a unique valid address 1 to 125 in order to be able to communicate with the master To change the address by using the configuration tool it is necessary to first set the address stored in the EEPROM to 126 This is done by setting the
45. module automatically and the user must update manually the value of the output module please refer to section 4 6 2 Data Output Command e Modbus device ID 1s a Modbus address of the GW 7552 when the GW 7552 acts as a Modbus slave device f We recommend the user to set the query message timeout value bigger than 3ms in order to identify the response message g M means the parameter is effective when Modbus type of GW 7552 1s master S means the parameter is effective when Modbus type of GW 7552 Is slave 4 4 The Configuration of the modules The user can set the number and size of the I O modules in the PROFIBUS configuration tool The settings of the modules are described below GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 34 e Max I O modules 32 modules e System setting module 3 byte out e Output module Output Relay Coil gt 1 32 Bytes Output Register 1 64 Words e Input module Input Relay Coil 1 32 Bytes Input Register gt 1 64 Words e Max length of I O data 259 Bytes e Output length 0 131 Bytes e Input length 0 128 Bytes The modules have module parameters about the communication settings The module parameters are shown in the below A Output Relay Coil module parameters e Modbus Slave Device ID M 0 247 e Start Address M 0 65535 e NO of Relay Coil M 8 n 1 1 8 n Bits n Module size Byte B Output Register module paramet
46. o fo LIL DA Device Address 0x01 FC Function Code OxOF Write multi DO SA H1 Start Address Hi byte 0x00 SA Lo Start Address Lo byte 0x00 NO H1 No Of points Hi byte 0x00 NO Lo No Of points Lo byte 0x10 BC Byte Count 0x02 4 8 2 Receiving data from the Profibus master device Send Command to read DI of the GW 7552 The user needs to input command 01 02 00 00 00 10 in MBRTU and click Send Command gt button to send Modbus command 01 02 00 00 00 10 79 C6 and then MBRTU can receive response message 01 02 02 00 00 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 48 B9 B8 In this message the user can know the value of DIO amp DII is 0 in the GW 7552 Send output data to write DI of the GW 7552 by the Profibus master The user needs to set OxFE amp OxDC in byte 3 amp byte 4 of output data area in the configuration program SyCon and then set the value of the first byte from 0 to 1 to trigger the data output command Send Command to read DI of the GW 7552 again Now the user can input command 01 02 00 00 00 10 in MBRTU and click Send Command gt button to send Modbus command 01 02 00 00 00 10 79 C6 again Then MBRTU can receive response message 01 02 02 FE DC F8 41 In this message the user can know the value of DIO amp DII have changed into OxFE amp OxDC in the GW 7552 as shown in figure 47 48 49 amp tabl
47. odule3 Maodulel Modulell Modulel2 Maodulel3 Modulel4 Maodulelb Madule15 Modulel 7 Modulei8 Modulel3 Maodule20U Module2zi1 Maodule22 Madule23 Module24 Maodule2 5 Maodule26 Maodule27 Maodule28 hModule23 Modules Maodules1 Address 4 0 7 H 8 15 16 23 24 31 32 39 40 47 48 55 56 63 54 71 72 79 80 87 88 05 96 103 Hi Hi Hd Eri EE EE a O Hi du D a a aD eee Ge Hi di Hi odi di odi di odi odi odio odi n Hi Hi Hd dd dd dodi Hi Hi Hi Hd HH Hi di dio dd dd dio di Hi Hd dio dd HH Hi di dio dio dd dd di Hi Hd dio Hd HH H H H H H H H H H H H H AN set ta H AN set ta L AN set ta F AN set ta LI 5 Figure 61 Safe value setting 5 5 Establish connection with GW 7552 The connection of Utility and GW 7552 1s shown in figure 62 Please follow the steps to establish connection Step 1 Wire Com Port of PC to RS 232 port of GW 7552 Step 2 Connect Profibus cable between Profibus master station and GW 7552 and enter data exchange mode please refer step 1 6 of section 4 8 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 62 Profibus and Modbus data exchange demo for detail The RUN LED of GW 7552 is going to light at this time PROFIBUS DP MASTER INTERFACE CARD PROFIBUS DEVICE L MASTER PROFIBUS SOFTWARE GW 552 syCon Modbus PROFIBUS Utility DEVICE 1 SLAVE RS 232 Figure 62 The connection
48. on of the common parameters and section 4 4 The Configuration of the modules the same as Modbus address of Modbus device e Please confirm Setting of Start Address and NO of Relay Coil is correct please refer section 4 4 The Configuration of the modules f Please confirm the output data put in correct address and have changed value of byte 0 to trigger the output command when output data can not send to modbus device in output data area of Profibus master please refer section 4 6 2 Output data area and communication command PAGE 65 7 Dimensions 29 50 O4 5X4 35 30 Back View Side View l Top View Unit mm S From View GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 66 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 67
49. re 60 The menu of safe value setting The window of Safe Value Setting divided into 6 parts to explain as shown in figure 61 1 Select module The user can select check box of the module to know memory address configuration of the module for set safe value of the module 2 DI O table The user can double click left button of mouse at the value of DI DO to change the value from H to L or L to H 3 All DI O setting The user can click All set to H button to set all of DI DO to H and click All set to L button to set all of DI DO to L 4 AT O table The user can double click left button of mouse at the value of AI AO to change the value into 0000 FFFF 5 All AI O setting The user can click All set to F button to set all of AI AO to FFFF and click All set to 0 button to set all of AI AO to 0000 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 61 6 Display and Save interface The user can click Output button to show safe value setting of DO AO click Input button to show safe value setting of DI AI click Save to File button to open save file dialog to save safe value setting for backup click Save to Device button to save safe value setting to EEPROM of the GW 7552 Safe Yalue Setting Select module L Modulel Module ModuleS Module4 Modules Module6 Module Modules M
50. s POD MasterQ Sisbon address FMSDP Master Insert Slave Slave Filter Vendor ICP DAS Co Ltd Y Slave type an w Available slaves Selected slaves Remove Al lt lt Remove ICP DAS Co Ltd Station address Ident number Ox0BOE Description U GSD filename IPDSOBOE GSD GSD Revision V1 00 PROFIBUS Config Mode Figure 353 assign the GW 7552 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 31 Step 4 Set the address of the GW 7552 and click OK button Fd SyCon EXE PTM TEST pb j Sel l Fil Edit Vi Insert J sis P MasterQ Staton adores FMSAIDP Master CIF50 PB Insert Slave Slave Filter Vendor ICP DAS Co Ltd w Master 0 CIF50 PB Slave type an w Available slaves Selected slaves 4 iGW 7552 lt lt Remove All lt lt Remove ICP DAS Co Li Sibtionaddress o Ident number Ox0BOE Description Slavel GSD file name IPDSOBOE GSD GSD Revision V1 00 PROFIBUS Config Mode Figure 34 set the address of the GW 7552 Step 5 The GW 7552 icon is shown in the window It adds the GW 7552 successfully in the software a SyCon EXE PIM_TEST pb i File Edit View Insert Online Settings Tools Window Help MasterQ Siro adores Q FWSDP Master CIF50 PE Slavel Staton addres l DP Slave GW 7553 PROFIBUS Config Mode Figure 35 Finish adding the GW 7552 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Vers
51. s Built in Watchdog Mountable on DIN Rail 1 2 Modules Support Only the following Modbus commands are supported by the gateway Table 1 Modbus function codes Read the ON OFF status of discrete outputs in the slave Read the ON OFF status of discrete inputs in the slave Force Single Coil Write a single output to either ON or OFF in the slave 06 Preset Single Register Write an integer value into a single register in the slave is fotseMiultiiCoils Write each coil in the sequence of coils to either ON or OFF 1n the slave Preset Multi Registers Write a block of contiguous registers in the slave 1 3 Specification COM Port specs e Serial port RS 232 RS 422 RS 485 e Serial port interface 14 pin screw terminal block GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 5 e Daud Rate 2400 4800 9600 19200 38400 57600 115200 bps e Data Format 7 8 data bits None Odd Even parity bit 1 2 stop bit PROFIBUS specs e PROFIBUS interface connector D sub 9 pin female e Baud Rate 9 6K 19 2K 45 45K 93 75K 187 5K 500K 1 5M 3M 6M 12Mbps e Address Setting 0 126 set by DIP switch or EEPROM Power requirement e Unregulated 10V 30V DC e Power reverse protection Over Voltage brown out protection e Power consumption 2 5W Module specs e Dimensions 119mm X 72mm X 33mm Operating temperature 25 75 C Storage temperature 30 85 C Humidity 5 95 non condensing LED Status Indica
52. sion 1 40 Apr 2012 PAGE 54 Step 5 Click the Close button to finish and exit the installation program jis PROFIBUS MODBUS GATEWAY UTILITY Installation Complete FR FIBLUS M U DBLUS GATEWAY UTILITY has been successtully installed Click Chose ta exit Cancel Figure 53 Installation complete step 6 After finishing the installation of the Profibus Modbus Gateway Utility users can find the Utility as shown in the following screen shot ThinkVantage Productivity Center T Windows Catalog o Windows Update Dy TEATRENE FERAE tz oh f 7188E ES Microsoft Visual Studio 6 0 a Lir eye 72505 7 Microsoft Visual Studio 2005 fj SyCon System Configurator IA Microsoft Office a Power Management 7 HHD Free Serial Port Monitor l Skype TH raiden ball lag ICPDAS L pS Series ae TE ruse P oW EE r F F F0 NEU F NECI SUM OW ae Windows XP Professional m ERE Figure 54 The path of Utility GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 55 5 2 Utility introduction By this utility the user can understand the module address of Profibus Modbus and the GW 7552 The utility also support users set safe value easily It introduces main window of the utility first as shown in figure 55 S Profibus Mod bus Gateway Utility g awWw 7552 e Module 1 Module 2 Parity ome Value State
53. tors Table 2 Table 2 LED status indicator Shows the power state PWR LED E Port state transmit or receive data ERRLED LED Show error state error state RUN LED Show communication state of PROFIBUS GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 6 2 Hardware 2 1 Block Diagram of GW 7552 RS 485 E RS 485 SIGNAL 7 DRIVE 2500 Vrms Isolation RS 422 MICRO PROFIBUS JP ROFIBUS SIGNAL a e PRECESS JR Controller a x SIGNAL RS 232 RS 232 LI SIGNAL E DRIVER I 3000V W A Isolation i I 1 AS E 10 30vDC DC c 1 Figure 2 Block diagram of GW 7552 2 2 Pin Assignment i oz GWH 7552 2 x L L a S l Lose ou x PROFIBUS E PRLS bed rrr deed saxenai ol WV vies abet bigak E MET Hades LES COP PEERS 112 522 4 83 JOU im aie bad rico OUR L N SERE TES bpa F Pi i HB bb peed iim m mad aan Tn ae j Fg y Rx PED AJ u M QU E j E si dann DE m fE B Power Input 10 304DC Figure 3 Pin assignment of GW 7552 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 7 Table 5 14 pin screw terminal block Pin Name Description l D Data of RS 485 2 D Data of RS 485 3 N A 4 TX Transmit Data of RS 422 5 TX Transmit Data of RS 422 6 RX Receive Data of RS 422 7 RX Receive Data o
54. ut Relay Coil module SR ee ap ko n WAC Output Register module pd e a Copy Profibus O P data to RDLRDO Input Relay Coil module memory Internal DO amp AO memory RALRACO Input Register module send Query messages to all WDO amp WAO modbus module TN NENNT Is module Index type RDILRDO RAT RAO Send a Query message to modbus module Index and refresh Internal DI Al memory Copy Internal DI amp AI memory to Profibus LP data Index Index Figure 27 GW 7552 master mode flowchart GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 26 When the GW 7552 acts as a Modbus slave device the data exchange runs continuously between Profibus master and the GW 7552 and the data exchange runs between Modbus master device and the GW 7552 when GW 7552 receive query message from Modbus master device as shown in figure 28 gt 29 PROFIBUS GW 7552 MASTER Profibus Modbus Gateway Input Data Modbus Slave Mode Modbus Master Device hax 128 Bytes Module l Modbus Device ID Byte d 4 xs l Query message Ye data i ctibus Data Bas i Modbus Start Addr Response message Data Module 2 Byte 127 exchange i Output Data Max 130 HA Bate d z data w i Module 37 Brie 129 Internal mecrmary Figure 28 GW 7552 slave mode communication protocol transfer Read GW 7552 setting amp memory mapping Byte Sate Value Settine Byte
55. x 128 Bytes Module 1 Module Type RDI Data L engtir Bytes Byte d Byte Internal memory Figure 20 the input data of Profibus master device receive from the GW 7552 3 2 Modbus data exchange Modbus protocol belongs to Master Slave communication and it uses query and response message to arrive at data exchange and device control as shown in figure 21 GW 7532 Profibus Modbus Gateway e Modbus Device ur M 7000 ICPon gt s i M 7000 E iy E ES mum m Station Mumber QUELS Flexible Function Code inen Data Bytes Flexible 7000 PLC Data exchange by Query Modbus M amp Response message P LO data _ po 65535 inc TE AI Figure 21 Data exchange between the Modbus devices and the GW 7552 GW 7552 PROFIBUS MODBUS GATEWAY User Manual Version 1 40 Apr 2012 PAGE 22 When the GW 7552 acts as a Modbus master device it can get query message through module parameter and DO AO data and send query message to Modbus slave device It can also receive response message form Modbus slave device and then saving to internal DI AI memory space as shown in figure 22 23 GW 7552 Profibus Modbus Gateway Modbus Master Mode Module Modbus Device ID 1 Module Tvpe W DO Query Internal Memory Base Addr 1 Modbus Device M 7 4H Device addr 1 Protibus Duta Base kModule

GW-7552 PROFIBUS/MODBUS GATEWAY User's Manual

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