User Guide

Product Information
5
AXB-PCCOM Communications Port Interface
Using the RS-232 (DB-9) connector control or data
The AXB-PCCOM uses the dual-function (DB-9) RS-232 connector (FIG. 6) to communicate with
the PC.
The following table lists (DB-9) RS-232 connector pinouts and signal definitions.
FIG. 6 RS-232 (DB-9) connector location on AXB-PCCOM
(DB-9) RS-232 Connector Pinouts
Pin Signal Function
1 N/A Not used
2 RXD Receive data
3 TXD Transmit data
4 DTR Data terminal ready (not used)
5 GND Signal ground
6 N/A Not used
7 RTS Request to send (not used)
8 CTS Clear to send (not used)
9 N/A Not used
RS-232 connector
9
8
7
6
5
4
3
2
1
9
8
7
6
Female - on PCCOM
Male
DB-9 (male)
DB-9 (female)