Serial Interface (COM on Box Module)
The serial interface is not isolated. The SG (signal ground) and FG (frame ground) terminals are connected inside this product. When the serial interface connector is D-Sub, connect the FG wire to the shell.
ELECTRIC SHOCK AND FIRE
When using the SG terminal to connect an external device to this product:
Failure to follow these instructions will result in death or serious injury.
LOSS OF COMMUNICATION
Failure to follow these instructions can result in injury or equipment damage.
|2||RD (RXD)||Input||Receive data|
|3||SD (TXD)||Output||Send data|
|4||ER (DTR)||Output||Data terminal ready|
|5||SG||-||Signal ground (not isolated)|
|6||DR (DSR)||Input||Data set ready|
|7||RS (RTS)||Output||Request to send|
|8||CS (CTS)||Input||Send possible|
Called status display
|Shell||FG||-||Frame ground (common with SG)|
Recommended jack screw is #4-40 (UNC).