4/16/2017 12:13 AM | |
Joined: 9/27/2006 Last visit: 8/27/2024 Posts: 12279 Rating:
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Hello Adham; If you mean RS-485 Modbus RTU communications between a S7-1200 master and a Danfoss FC102 drive as a slave, here are a few links that should get you up to speed for your project; do not hesitate to come back to us for more détails once you have studied the documents below: 1. From our friend smiffy, a very informative document (and discussion) on the nbbasics of Modbus communication. As a refresher for anyone who has a bit of experience with Modbus, it is quite interesting. Fos someone who is just starting to work with Modbus, this information is critical, 2. documentation on the Danfoss FC102 as a Modbus RTU slave: - Danfoss general Modbus document (includes a description of hardware, wiring and supported Modbus functions) : http://files.danfoss.com/technicalinfo/dila/17/FRCC.ES.008.A1.02.pdf - Danfoss FC102 Modbus register mapping: Command and status word, holding registers (Excel file) FC102 Modbus Holding Registers 2. S7-1200 as a Master on Modbus RTU: - S7-1200 Modbus RTU sample program (link available in the following FAQ) : Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 4/16/2017 12:14:33 AMLast edited by: dchartier at: 4/16/2017 12:15:02 AMLast edited by: dchartier at: 4/16/2017 12:24:23 AM |
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4/16/2017 3:10 AM | |
Posts: 42 Rating:
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Dear Daniel, Please find attached schematic for hardware connection, I hope its clear. Thanks a lot for supporting me |
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