8/4/2020 7:02 PM | |
Joined: 7/17/2007 Last visit: 3/28/2024 Posts: 1 Rating: (0) |
Good evening, I connect cpu 315-2 DP whit T2550 (Eurotherm) in the profibus network. Is possible write the register of the T2550 whit the S7 300 REAL variables? Please help me. Angelo ------------------------------------------------------------------------------------------ |
Last edited by: djangelino at: 08/04/2020 19:03:24Last edited by: djangelino at: 08/04/2020 19:03:58Last edited by: Jen_Moderator at: 08/05/2020 06:28:47New subject after splitting |
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8/6/2020 3:52 PM | |
Joined: 5/15/2012 Last visit: 2/20/2024 Posts: 39 Rating: (7) |
Hello, This is a special “solution”. Because, what I read about Profibus communication for this module it is a “masked” Modbus. And for creation of gsd file is necessary some software or make modification in original gsd file. Manual writes (page 35): Data is transmitted in both directions as a single 16-bit integer value (also called a ‘register’). The value is returned as a scaled integer such that 999.9 is returned as 9999, and 1.234 is returned as 1234. The control program in the Profibus Master must convert these integers into floating point numbers if required. So you can use this way or put two Modbus Word (16bits) together and create a DWord (Real). But that can be a problem in the order of bytes in DWord based on the type of processor (Little or Big Endian). next manual https://www.eurotherm.com/?wpdmdl=27915 Attachmentha028014_6_00.pdf (76 Downloads) |
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