How to use MCGS configuration software to collect the status of PLC relay in programming port? The model of PLC is Delta DVP 16EC. I made a series connection, which is invalid.

In fact, these communication errors that others can't analyze for you are nothing more than two problems: serial port configuration and serial port pin connection.

Check whether the serial port pin is the pin required by Delta PLC ~ It is on the PLC data! The rest is baud rate or something! Unsuccessful communication usually means that the pins are not connected correctly. MCGS COM0 stands for 232 COM 1 stands for 485. Look at this. Did you choose the right one?

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