7/9/2016 10:52 PM | |
Joined: 9/27/2006 Last visit: 9/4/2024 Posts: 12282 Rating:
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Hello Boardwalk; When using an EM 277 as a Profibus slave, you must setup a data exchange area with the S7-x00 master. Follow point 7 in the following FAQ: How can you communicate data between the S7-200 and the S7-300 via PROFIBUS DP? https://support.industry.siemens.com/cs/ww/en/view/2615830 That way you create an exchange area between V addresses of the S7-200 and I/Q addresses in the S7-300. Note that the S7-300 address mnemonics used in the FAQ are German (Axxx is for Ausgang, output, Exxx is for Eingang, input), you might be more familiar with the English mnemonics: EB10 becomes IB10 AB10 translates to QB10 Hope this helps, Daniel Chartier |
7/10/2016 12:51 AM | |
Joined: 3/15/2016 Last visit: 8/1/2024 Posts: 7 Rating:
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Hello Daniel I know that. I am moving the bytes i want to send to VB's in the S7-200 and receiving them in IB's in the S7-300. I am using a configuration of 32 Bytes_Out/32 Bytes_In , and the memory exchanged area is well configured. Moving single bytes works fine, but if i need to move Double Words ( 4 bytes) how should i proceed? Can i use VD´s and ID's, or the module only works with single bytes at a time? |
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