User`s manual

User manual Version 1.1
ABLELink
®
Ethernet Serial Server SE5002
Copyright © 2006 Atop Technologies, Inc.
All rights reserved. Designed in Taiwan.
- 38 -
A.3.2.1 DB9 Pin Assignments
The pin assignments of DB9 connector on SE5002 are shown in the following table:
Pin#
RS-232
Full Duplex
for SE5002 Model
RS-485/RS422
2 wire, Half Duplex
for SE5002 Model
RS-485
4 wire, Full Duplex
for SE5002 Model
1 DCD N/A N/A
2 RXD N/A (reserved)
TXD+
3 TXD
DATA+
RXD+
4 DTR N/A N/A
5 SG (Signal Ground) SG (Signal Ground) SG (Signal Ground)
6 DSR N/A N/A
7 RTS
DATA- RXD-
8 CTS N/A (reserved)
TXD-
9 N/A N/A N/A