Standard RS-232 Serial Cable

To build a standard RS-232 serial cable, you will need two 9 or 25 pin connectors and a cable with 5 wires, preferably shielded cable.

Connector AConnector B
RXTX
TXRX
RTSCTS
CTSRTS
GNDGND

Standard RS-232 serial cable.

If the cable is shielded, you should use the shield as ground (GND).

Standard RS-232 cable between PC and Control with hardware handshake

On a 9 pole plug (at the controller), cabinet ground should be connected to the metal housing.

Standard RS-232 cable between PC and Control with software handshake

On a 9 pole plug (at the controller), cabinet ground should be connected to the metal housing.

OKUMA RS-232 cable between PC and Control with hardware handshake