Serial RS485 communication confusing
Hello fellow PLC programmers,
I am having a hard time figuring out how to implement rs485 serial communication with an exisiting very old system. I received some documentation that explains how the strings the system expects must look like:
I wrote some code to build the string with dummy data for the analogue data string:
Which outputs the following string: '@60:+1000,+500,+500,+500,+500,+500,+500,+500,+500,+500,<CR LF>'
for the digital string:
Which produces: '*61:$90$03$02$00$0E$00AA<CR LF>'
Is this right? Is <CR LF> supposed to be send like this?
Posted Jul 5, 2025, 11:45 AM UTC
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