Hello, let me think. Ask about the communication between plc and scanning gun. Can you explain it to me?
Generally, PLC communicates with the scanning gun through serial port, that is, PLC adds a serial port module, and the interface of the scanning gun is set to serial port, so that PLC can be directly connected through the serial port data line of the scanning gun. In general, serial communication parameters can be set to 9600, n, 8, 1, and parity can also be added.