86CCM840/1640 Installer/User Guide

Appendix B: Device Cabling

Each CCM serial port has an RJ-45 connector for attaching a serial device. The

following table lists the pin assignments.

Port Pin Assignments

Pin #

RS-232 Signal

Direction

Description

 

 

 

 

1

RTS

Output

Request To Send

 

 

 

 

2

DSR

Input

Data Set Ready

 

 

 

 

3

DCD

Input

Data Carrier Detect

 

 

 

 

4

RxD

Input

Receive Data

 

 

 

 

5

TxD

Output

Transmit Data

 

 

 

 

6

GND

(N/A)

Signal Ground

 

 

 

 

7

DTR

Output

Data Terminal Ready

 

 

 

 

8

CTS

Input

Clear to Send

NOTE: RI (Ring Indicate) is not supported

Figures B.1 through B.3 show the wiring diagrams for cables that connect from

CCM ports to terminals/printers, PCs and modems.

Figure B.1: Cable Pin Assignments for RJ-45 to Terminal/Printer