Communication problem. If it is RSC85 communication, the communication signal may be wrong due to interference. If it is RS232, please replace the communication line. RS232 is relatively stable, and it is recommended to use it first.
You can use one touch screen to communicate with two PLCs (if the model has W in it, communication is not allowed) First, connect the COM1 of the touch screen with a PLC, and use the SC-09 cable for communication.The other one uses the touch screen for COM2 communication (communication mode is 485, wiring method: touch screen 4-8 is shorted, 6-9 is shorted, touch screen 1 is connected to PLC -- SDA, 2 -- SDB, 3 -- RDA, 7 -- RDB, 5 -- SG)
If you buy a standard Mitsubishi cable, please connect the cable to the COM2 on the Delta screen. If both are female connectors, you can buy a male male 232 adapter.Both COM1 and COM2 of Delta have 232, but the pin order is opposite. Only one port can communicate smoothly.Delta does not support Mitsubishi 485.If the 485 communication between PLC of other brands and COM2 of Delta screen is connected to pins 1 and 6, when 422 is connected to pins 16 and 49, and pin 5 is grounded.
