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| 6/15/2011 3:45 PM | |
Joined: 10/7/2005 Last visit: 5/26/2023 Posts: 2965 Rating:
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Hello K Vijay all I can advise you is that this is going to be a tough task. Modbus RTU was supported in S5's via the serial CP's (e.g. 524/5) via loadable driver. From a program point of view though you would have used the normal standard Siemens Data Handling Blocks (e.g. FB120-125 in a 135/155)and the Modbus Function codes were contained as "header" information in the request DB's. Without commentsit willbe a bit of a task to determine which FB calls are for Modbus and which ones are for other Send/Receive jobs (should you have them, if not then look for the above mentioned FB's). Question: Why do you want (or have) to find this out? |
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