SIMATIC S7-200

S 7 200 CPU 224 XP Not Communicating

Thread Starter: Pintu   Started: 11/11/2011 8:47 AM   Replies: 3

  11/11/2011, 8:47 AM

Pintu Joined 6/28/2007 Last visit: 12/14/2012 Posts: 15 Rating:  (0)	(0)  Dear All, I am having a counication problem with S7 200 CPU 224 XP and my Siemens  PG . The PG is communicating fine with S7 200 CPU 226. Is there any setting that is to be changed in the communication ? Please advise. Thanks in advance Best Regards, With best regards / Mit freundlichen Gruessen Pintu 0097 150 150 3603
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  11/11/2011, 9:08 AM

Helmut_13 Joined 7/24/2006 Last visit: 5/22/2013 Posts: 1824 Rating:  (216)

(0)  Hi, a lot of things can be changed to effect the communication: + Station addresses (PLC #2, PC #0) + Baudrates and protokolls + ASCII protocoll used at PLC Switch the PLC to stop mode and try once more (this disables Freeport mode (ASCII) at the PLC interface. Check: the stations addresses for PLC and PC (must be different) Baude rates Try different protocolls at the PG (PPI, MPI, DP) with different baudrates. Basically you communication works because you can connect to other S7-200 PLC. So there is something wrong with the settings. Some funny guys change the PLC station address to 0 (via PLC program). If you do not change the Station address (default station adress is also 0) of the PG, then you can't communicate to this PLC. Try the second PLC Interface when PLC is in STOP. Hope this helps

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  11/15/2011, 10:18 AM

chandrakant s... Joined 7/22/2011 Last visit: 5/3/2013 Posts: 20 Rating:  (0)	(0)  Dear sir I had just tried the communication for the same may dat help u. I first keep the braudrate as 9.6kbps in setpgpc & communicate with mpi,but selected ppi adapter in setpgpc. Then i downloaded the programs with braud rate as 187.7kbps. Then i communicated with mpi adapter in setpgpc interface. hope this can work out for u too. with regards chandrakant singh
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  11/17/2011, 1:16 PM

Pintu Joined 6/28/2007 Last visit: 12/14/2012 Posts: 15 Rating:  (0)	(0)  Dear All, The PLC is now comunicating with 187.7kbps . Thanks for all you support  With best regards / Mit freundlichen Gruessen Pintu 0097 150 150 3603
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