Chapter 6: physical hook-up and troubleshooting, Pinouts – B&B Electronics RS-232/422/485 Serial Card CE 3PXCC4A User Manual
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Manual Document# 3PXCC4A3001
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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
Chapter 6: Physical Hook-up and Troubleshooting
This chapter will cover 3PXCC4A pinout, communication cable
data, and troubleshooting information.
Pinouts
RS-232 Pinouts
The 3PXCC4A Serial Cards are wired using RJ45 type
connectors for each port. The following table shows the pinout for
the RS-232 connections.
Table 5. RS-232 Pinout Description
NOTE: RJ45 pin numbers are referenced from left to right when
looking into the connector receptacle with the component side of the
card facing upwards.
RJ45 Pin
RS-232
Signal
Direction Std.
DB9
Pinout
Std. DB25
Pinout
1
RTS output 7
4
2
TD output 3
2
3
CTS input 8
5
4
RD input 2
3
5
DTR output 4
20
6
DSR input 6
6
7
DCD input 1
8
8
GND ---- 5
7