5/20/2011 2:19 PM | |
Joined: 3/21/2006 Last visit: 4/25/2024 Posts: 10228 Rating: (1181) |
Hello, Yes you need EM277 in order s7-200 to be a profibus slave there. Look at one example -How can you communicate data between the S7-200 and the S7-300 via PROFIBUS DP? Best regards, Hristo MIhalev |
Last edited by: O_Moderator at: 5/20/2011 2:21 PMlink edited |
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5/28/2011 12:09 PM | ||
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (270) |
Hello, For Profibus communication you needProfibus module as said byUmencho. Can you give someinformation about your DCS.is it PCS7? Do you have any Modbus Master CPin your DCS? |
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VANDE MATARAM..... |
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This contribution was helpful to1 thankful Users |
6/1/2011 8:03 PM | |
Posts: 947 Rating: (45) |
Profibus interface often is embedded interface in s7-300, therefore use communicate s7-300 and EM277 as Mater-slave, most of the exchange rate Modbus.Use profibus -It is logical. It is only necessary to take into account the size limit of the exchange - 32 word. The complete installation MicroWin includes examples of programs, including through the exchange of EM277 |
6/2/2011 6:29 AM | ||
Posts: 691 Rating: (36) |
You can use MPI also |
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6/2/2011 6:49 AM | |
Posts: 947 Rating: (45) |
Hello MPI max 187.5Kbod, Profibus - max 12Mbod. Profibus has galvanic isolation circuit. |
6/2/2011 7:27 AM | |
Joined: 8/18/2009 Last visit: 2/22/2024 Posts: 541 Rating: (33) |
So could I MPI Communication with DCS without using EM277 Module, Is it Possible . |
Last edited by: Automation Way at: 6/2/2011 7:28 AMRajkiran Patil |
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6/2/2011 7:34 AM | |
Joined: 4/19/2008 Last visit: 2/9/2024 Posts: 1525 Rating: (159) |
Hi Rajkiran, is it Siemens PCS7 DCS you are talking? if yes then . then it will work using the X_PUT & X_GET Block in the S7-300/400 Side, No need to do the Programing on the S7-200 Side. else you have to go with EM277 Profibus. |
Last edited by: Ammy at: 6/2/2011 7:41 AMAmmy |
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6/2/2011 7:35 AM | |
Joined: 3/21/2006 Last visit: 4/25/2024 Posts: 10228 Rating: (1181) |
Hello, Look there - How does data communication work between S7-300/S7- 400 and S7-200 via MPI using S7 basic communication? Best regards, Hristo Mihalev |
6/2/2011 8:35 AM | |
Posts: 691 Rating: (36) |
If you don't want to use PLC- PLC communication and only want to show the Data then Directly you can configure MPI Connections in the WinCC. You can read I,M and Q Or Else You can use OPC |