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S71200 Telecontrol GPRS

12/10/2012 10:28 AM	Rate (0)
bdusej Regular Member Joined: 9/4/2012 Last visit: 10/1/2024 Posts: 3 Rating: (0)	Hello, i'm having problems with communication between telecontrol server and s71200 over gprs. We are using example CE-X21 Scenario 1 on PLC and project for telecontrol server (TCS) is done with tia 11. The thing is that everything is working for couple of minutes and then TCS starts reporting stuf like socket down, PLC not reachable, gprs signal not ok. TCS then get woken up immediately when PLC starts to send data. The type of connection on TCS is permanent, everything is set up like in example, we have gone trough documentation and don't have any idea anymore. If i send data from PLC the whole image is transfered to TCS all data are ok. When TCS sends i'm getting whole process image and all data to my DB. But sometimes when TCS sends it immediately gives error socket down, ERROR TCM 200565 CIptHandler::SwapWdcpData: length 38 < telegram length 51.... Does anybody have any experiance with this application. I can give further info, send PLC program... Thanks

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12/12/2012 7:31 AM	Rate (0)
Robert_Chelny Posts: 16 Rating: (0)	as you have the stability of the system?
Robert_Chelny Posts: 16 Rating: (0)
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12/12/2012 8:15 AM	Rate (0)
bdusej Regular Member Joined: 9/4/2012 Last visit: 10/1/2024 Posts: 3 Rating: (0)	on all 5 stations with PLC's we didn't see any voltage drop. We have just one PLC 1214C per station with only 2 outputs used. There is also UPS installed. Could be also something with gprs network.... When TIA / TCS doesn't see PLC or report that PLC is not reachable and report that gprs signal is nonexistent even teleservice doesn't work for that station. Funny thing is that in TCM sometimes all stations are online and sometimes one or all are offline. Runtime app is showing PLC connected again when PLC sends data or also when we deactivate and activate TIA wincc runtime. That is the only way that we get connection to PLC back. Looking on PLC there is no disconnection/connecting going on, there are no errors on tc_con, tc_discon, tc_send, tc_recv. PLC sends data every time TC_SEND gets request and TCS always gets the data. And PLC get the data form TCS also (when TCS reports that PLC is online ...) TC_CON parameters are ok, all DB are created with standard access. I've send PLC program to siemens support but for now they send new firmware 1.3 for CP. Upgraded and it's the same. I've attached TCM log files.... Thanks Attachment TCM_log.zip (105 Downloads)

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