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Weather Station Using PLC as a Data Concentrator on RS485 Protocol
How to use a PLC as a data concentrator unit for my field devices which communicate on RS485 protocol?


Using PLC as a data concentrator unit for my field device which are in communication on RS485 protocol.

I have a weather station and it is connected to a raspberry pi 3. when I run the program, it does not give me any error. just that when reading the temperature it prints 0.0 and not the temperature.

can help me please?

By Fred Loveless on 28 December, 2018 - 11:17 am

What is the make and model of the weather station?

What is the communications protocol like? can you provide a protocol document?

What is the request supposed to look like when it goes out on the wire and what is the response supposed to look like?

Every piece of real information you can provide gives us more to base an answer on.