0 rs-232 pin number assignments – CyberResearch RS-232 User Manual
Page 17
CyberResearch
®
Serial Communications
COMT 366 Series
CyberResearch, Inc.
9
25 Business Park Drive
P: (203) 483-8815; F: (203) 483-9024
Branford, CT USA
www.cyberresearch.com
6.0 RS-232 Pin Number Assignments
Pin
EIA
CCITT
Name
2
BA
103
Transmit Data
*
3
BB
104
Receive Data
*
4
CA
105
Request to Send
**
5
CB
106
Clear to Send
**
6
CC
107
Data Set Ready
***
7
AB
102
Signal Ground
Gnd
8
CF
109
Data Carrier Detect
***
20
CD
108.2
Data Terminal Ready
***
* These signals can be reversed using the selector switch.
**, *** Connected together
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