Cannot write the program on the PLC with GX develop. The COM port is wrong. The connection port is no problem. The connection is USB-SC09-FX-AW.

This data line is a USB-RS422 communication line. To use the basic settings, first install the driver of USB-SC09-FX-AW, then set the virtual serial port in the hardware, and the GX develop software. The serial port number setting is the same ones.