Serial Interface

The serial interface is not isolated. The SG (signal ground) and FG (frame ground) terminals are connected inside this product.

You can switch the communication method between RS-232C and RS-485 via the software.

NOTE: For information on how to connect controllers and other types of equipment, refer to the corresponding device driver manual of your screen editing software.

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.

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 RJ-45 connector that has a functional locking tab. Failure to follow these instructions can result in injury or equipment damage.

NOTE: Use within the rated current.

RS-232C/RS-485

RJ45 connector

NOTE: When setting up RS-485 communication, the cable diagram for some equipment may require polarization on the terminal side. Change the setting for polarization with your screen editing software.

Pin No.	RS-232C/RS-485
Pin No.	Signal name	Direction	Description
1	RD (RXD)	Input	Receive Data (RS-232C)
2	SD (TXD)	Output	Send Data (RS-232C)
3	NC	-	No connection
4	D1	Input/Output	Transfer Data (RS-485)
5	D0	Input/Output	Transfer Data (RS-485)
6	RS (RTS)	Output	Request To Send
7	NC	-	No connection
8	SG	-	Signal Ground
Shell	FG	-	Frame Ground