Appendix B: Connector Pinouts; B.1 Rs-232 - Black Box 2-Port RS-232/422/485 User Manual

2-PORT RS-232/422/485 PCI HOST ADAPTER

Appendix B: Connector Pinouts

B.1 RS-232

Table B-1. Pinout of Connector Set to RS-232
Abbreviation
TD
RTS
DTR
GND
RD
DCD
DSR
CTS
RI
These pin assignments meet the EIA/TIA/ANSI-574 standard for RS-232
DTE pinning on DB9 connectors.
26
Name
Transmit Data
Request To Send
Data Term Ready
Ground
Receive Data
Data Carrier Detect
Data Set Ready
Clear To Send
Ring Indicator
NOTE
Pin #
3
7
4
5
2
1
6
8
9
Mode
Output
Output
Output
Input
Input
Input
Input
Input