Rj-11 to Serial port pinout
Greeting.
I have a Vision 120 PLC, I would like to communicated it to my PC via USB port. But the communication cable is not come with the unit. Could you please provide me pin out for Rj-11 (4 pin) to serial port (9 pin female) pinout diagram? I have the Serial (male) to USB. Appreciate your prompt response.
Some quastion:
- is it USB driver installed correctly and com port appear in Hardware?
- is it correct com port selected in Visilogic and different speed selection tested?
If yes - try to run terminal program on PC, select com port - connect 2 to 3 pin on USB-RS232 adapter and test loopback - is it TX information appear in RX terminal buffer.
If terminal test OK - doble check wiring - only 3 wire needed for connect.
If terminal loopback not work - change USB-RS232