Serial Interface (RS-485 [Isolation]) for COM1

Introduction

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.

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-485 (Isolation)

RJ-45 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.

Product side	Pin No.	RS-485 (Isolation)
Product side	Pin No.	Signal name	Direction	Meaning
	1	NC	–	No connection
	2	NC	–	No connection
	3	NC	–	No connection
	4	Line A	Input/Output	Transfer Data A (+)
	5	Line B	Input/Output	Transfer Data B (-)
	6	RS (RTS)	Output	Request to Send
	7	NC	–	No connection
	8	SG	–	Signal Ground
	Shell	FG	–	Functional Ground

NOTE: The FG and SG terminals are isolated.