Serial Interface Specifications Rs-232C - Pro-face PFXGP4502WADW Hardware Manual

Serial Interface Specifications RS-232C

Introduction
This interface is used to connect GP-4402WW/GP-4502WW to remote equipment, via a RS-232C
cable. The connector used is a D-Sub 9-pin male connector.
By using a long PLC cable to connect to the panel, it is possible that the cable can be at a different
electrical potential than the panel, even if both are grounded.
The serial port of the panel is not isolated. The SG (signal ground) and the FG (functional ground)
terminals are separated inside the panel.
ELECTRIC SHOCK
Make a direct connection between the functional ground (FG) terminal and ground.

Do not connect other devices to ground through the functional ground (FG) terminal of this

device.
Install all cables according to local codes and requirements. If local codes do not require

grounding, follow a reliable guide such as the US National Electrical Code, Article 800.
Failure to follow these instructions will result in death or serious injury.
Serial Interface RS-232C
This table describes COM1 with its D-Sub 9-pin connector for a RS-232C cable.
Pin connection
Any excessive weight or stress on communication cables disconnect communication with the
equipment.
LOSS OF COMMUNICATION
All connections to the communication ports must not put excessive stress on the ports.

Securely attach communication cables to the panel or cabinet.

Use only D-Sub 9-pin cables with a locking system in good condition.

Failure to follow these instructions can result in injury or equipment damage.
DANGER
Pin Signal name
1 CD
2 RD(RXD)
3 SD(TXD)
4 ER(DTR)
5 SG
6 DR(DSR)
7 RS(RTS)
8 CS(CTS)
9 Reserved
Shell FG
CAUTION
GP-4402WW/GP-4502WW Hardware Manual
Meaning
Carrier Detect
Receive Data
Send Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request to Send
Send possible
–
Functional Ground
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