A.3.2.1 db9 pin assignments – Atop Technology SE5002 User manual User Manual
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User manual Version 1.3
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A.3.1.2 SE5002-S55is (RS-422/RS-485)
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