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S7-1200 with Modbus RTU

... either have no time to search for, or there is no time to read them. It is necessary that clicked on the button and here it is the result. What can I say, please forgive and accept) In this article I will describe how I connected the S7-1200 Siemens PLC (TIA-Portal SP1) via the CM1241 communication module with the IP320 monochrome panel Who simultaneously works with a large number of brands PLC and SCADA faces sooner or later with the fact that competence is not enough. Usually something does not work, but how to understand why? Where to read? ...