SIMATIC S7-200

communication between pc and plc S7-200 through rs232

Thread Starter: fethi   Started: 3/7/2006 2:21 PM   Replies: 2

  3/7/2006, 2:21 PM

fethi Joined 3/7/2006 Last visit: 3/16/2006 Posts: 1 Rating:  (0)

(0)  I have documents which explains the protocol ppi (explains the formats of frame accepted by the CPU of the S7-200 automat). I wrote a code which ensures the communication between PC and s7-200. I tested but it does not function I have make several checking: - I have an achievable file which ensures the communication between PC s7-200. I used a serial monitor to know the frame exchanged between PC and automat I noted that they similar to those are used in my code I have doubts about times (use of structure COMMTIMEOUTS) typedef struct _COMMTIMEOUTS { // ctmo DWORD ReadIntervalTimeout; DWORD ReadTotalTimeoutMultiplier; DWORD ReadTotalTimeoutConstant; DWORD WriteTotalTimeoutMultiplier; DWORD WriteTotalTimeoutConstant; } COMMTIMEOUTS,*LPCOMMTIMEOUTS; language used is C++ if you have in more one idea on others problémes which can met us. To indicate us

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  11/29/2006, 5:56 AM

Johnny_Suong Joined 11/29/2006 Last visit: 6/16/2013 Posts: 9 Rating:  (0)	(0)  Hi! can you give me protocol of plc s7-200? I want research about it. thank and best regard
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  11/17/2011, 12:43 PM

HASSEN700 Joined 5/16/2010 Last visit: 3/29/2012 Posts: 5 Rating:  (0)	(0)  Hi; Can you give me the document that you have, i'm also have a searche about it, we can exchange idea; Thanks& Best Regards
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