ET6000-MM01-EN_02

Serial Interface

The serial interface is not isolated. The SG (signal ground) and FG (frame ground) terminals are separated inside this product. When using a D-Sub serial interface connector, connect the FG wire to the shell.

DANGER
ELECTRIC SHOCK AND FIRE
When using the SG terminal to connect an external device to this product:
  • Verify that a ground loop is not created when you set up the system.
  • Connect the SG terminal to remote equipment when the external device is not isolated.
  • Connect the SG terminal to a known reliable ground connection to reduce the risk of damaging the circuit.
Failure to follow these instructions will result in death or serious injury.
CAUTION
LOSS OF COMMUNICATION
  • Do not put excessive stress on the communication ports of all connections.
  • Securely attach communication cables to the panel wall or cabinet.
  • Use a D-Sub 9 pin connector that has jack screws.
Failure to follow these instructions can result in injury or equipment damage.
NOTE: Use within the rated current.

Serial Interface COM1 RS-232C

D-Sub 9 pin plug connector

Product side:

Pin No. RS-232C
Signal name Direction Description
1 CD Input Carrier Detect
2 RD (RXD) Input Receive Data
3 SD (TXD) Output Send Data
4 ER (DTR) Output Data Terminal Ready
5 SG - Signal Ground
6 DR (DSR) Input Data Set Ready
7 RS (RTS) Output Request To Send
8 CS (CTS) Input Clear To Send
9 NC - No connection
Shell FG - Functional Ground

Recommended jack screw is #4-40 (UNC).

Serial Interface COM2 RS-422/485

D-Sub 9 pin plug connector

Product side:

Pin No. RS-422/RS-485
Signal name Direction Description
1 RDA Input Receive Data A (+)
2 RDB Input Receive Data B (-)
3 SDA Output Send Data A (+)
4 NC - No connection
5 SG - Signal Ground
6 NC - No connection
7 SDB Output Send Data B (-)
8 NC - No connection
9 NC - No connection
Shell FG - Functional Ground

Recommended jack screw is #4-40 (UNC).

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