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I have a Fanuc 90-30 PLC with CPU 363. On its RS485 port (on CPU), one local operator interface (XOR's Tline) is alredy connected. I need to connect a PC to RS232 (RJ11) port on the CPU 363 to obtain various register and coil values using Modbus RTU protocol.
I have gone thru various google searches but still not clear what exactly is required to achieve above aim. Do I need to do any PLC programming etc like COMMREQ.
I have been dealing with different PLC's in the past. For making a PLC as RTU slave, in my opinion all you require should be to tell its CPU what are the comm parameters like baud rate, parity, data word length, stop bits and parity besides defining station address.
Can someone tell me all steps involved.
Thanks and Regards.
My email ID is [email protected]
I have gone thru various google searches but still not clear what exactly is required to achieve above aim. Do I need to do any PLC programming etc like COMMREQ.
I have been dealing with different PLC's in the past. For making a PLC as RTU slave, in my opinion all you require should be to tell its CPU what are the comm parameters like baud rate, parity, data word length, stop bits and parity besides defining station address.
Can someone tell me all steps involved.
Thanks and Regards.
My email ID is [email protected]