Hardware reference guide

Intelligent/Special Purpose
35013379 02 October 2007 391
RS-232C Serial
Ports
The following table shows the pin number and description for the RS-232C serial
ports.
The serial port interface allows the user to configure the module and to program the
ASCII messages into the module. This is only activated when the module enters into
its programming mode via the front panel push button.
Pin Number Signal Name Description
1 DCD Carrier Detect
2 RXD Receive Data
3 TXD Transmit Data
4 N/A Not Connected
5 GND Signal Ground
6 N/A Not Connected
7 RTS Request to Send
8 N/A Not Connected
9 N/A Not Connected
Shield N/A Chassis Ground
Note: The serial port is capable of communicating with either a dumb terminal or a
PC using terminal emulation software (i.e., PROCOMM).
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com