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2/10/2012 5:52 PM | |
Posts: 4 Rating: (0) |
Dear all I want communication between S7-200 CPU 224XP Port0 or Port1 ( Mobus master) and Woodward MFR13 Multifunction Relay (Modbus salve) to read modbus data 40001-40028. First question the CPU 224 XP is support modbus RTU? I tried many difirent way as more information link but it does not work. https://support.automation.siemens.com/WW/llisapi.dll/27832511?func=ll&objId=27832512&objAction=csView&lang=en&siteid=cseus&aktprim=0&extranet=standard&viewreg=WW&load=treecontent /tf/WW/en/Posts/15462 Untill I found someone post clip on Youtube http://www.youtube.com/watch?v=Pbslaf9D6vo I triedand tested via Modsim program(Slave)pass RS232/RS485 convertor, please see my attached file, follow my attached Ican write data from CPU 224XP only port1 (port 0 i always tested and configurated it not active ) toModsim program(Slave), but I can not read data fromModsim program(Slave). Why? this is second question for me. Please help me solve this problem! what i wrong? and how to fix this problem. Regards, Pajone
AttachmentTested_ModbusRW.zip (555 Downloads) |
2/11/2012 1:19 AM | |
Posts: 4 Rating: (0) |
Please see my attached for MFR13 Modbus table, I want to read Modbus data 40001-40028, thank....
Attachment37353 MFR-13 Manual.pdf (515 Downloads) |
2/21/2012 8:53 AM | |
Posts: 4 Rating: (0) |
Now, I tested and fixed my problem already I can say and find my answer follow my question before? 1. S7-200 CPU-226XP is support Modbus RTU. 2. Modbus Data 40001(16Bit = 2Word=1Int) write to (example) pointter &VB1200 (Byte) on S7-200 CPU => Modbus data (40001) writer to (VB1200 and VB1201) or (VW1200), please see my attached. 3. The code on example in the S7-200 user manual use for referance only, but dose not work follow my tested, I find the sulution and tested many style and I found 1 solution can fixed my problem. 4. Follow this linkhttp://www.youtube.com/watch?v=Pbslaf9D6vo, I want to say thank you for your share. |
Last edited by: pajonec at: 2/21/2012 8:55 AMLast edited by: pajonec at: 2/21/2012 8:54 AM |
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