Specifications of Serial Interface COM2

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.

The serial port is not isolated. The SG (signal ground) and FG (frame ground) terminals are connected inside the panel.

DANGER

ELECTRIC SHOCK

When using the SG terminal to connect an external device to the panel:

oVerify that a short-circuit loop is not created when you set up the system.

oConnect the #8 SG terminal to remote equipment when the host (PLC) unit is not isolated. Connect the #8 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.

Serial Interface COM2

HMIGTO2300 / HMIGTO2310 / HMIGTO2315: RJ45 connector via a RS-485 cable.

NOTE: When setting up RS-485 communication, the cable diagram for some equipment may require polarization on the terminal side. This terminal does not require any special setting as it handles polarization automatically.

Pin Connection	Pin No.	RS-485
Pin Connection	Pin No.	Signal Name	Direction	Meaning
	1	NC	-	-
	2	NC	-	-
	3	NC	-	-
	4	Line A	Input/Output	Transfer Data (RS-485)
	5	Line B	Input/Output	Transfer Data (RS-485)
	6	RS(RTS)	Output	Request To Send
	7	NC	-	-
	8	SG	-	Signal Ground

CAUTION

LOSS OF COMMUNICATION

oAll connections to the communication ports must not put excessive stress on the ports.

oSecurely attach communication cables to the panel wall or cabinet.

oUse only RJ45 with a locking tab in good condition.

Failure to follow these instructions can result in injury or equipment damage.