B&B Electronics RS-422 - Appendix B: CONNECTOR PINOUTS; Table B.1: RS-232 Pinouts

Documentation Number 3PCIO1-0903 Manual Appendix B B -1
B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
Appendix B: CONNECTOR PINOUTS
Table B.1: RS-232 Pinouts
Table B.2: RS-232 DB9 to DB25 Conversion Cable
Name DB9 Pin
(DTE)
DB25 Pin
(DTE)
DCD 1 8
RD 2 3
TD 3 2
DTR 4 20
GND 5 7
DSR 6 6
RTS 7 4
CTS 8 5
RI 9 22
Chassis
GND
Shield
(DB9
Shell)
1
Name Description Direction
(DTE)
DB9M
Pin
DCD Data Carrier Detect Input 1
RD Receive Data Input 2
TD Transmit Data Output 3
DTR Data Terminal Ready Output 4
GND Signal Ground ------ 5
DSR Data Set Ready Input 6
RTS Request to Send Output 7
CTS Clear to Send Input 8
RI Ring Indicator Input 9