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Chapter 4
Communication Ports
NOTE
On power-up, all serial ports default to RS485 mode. Each port can be individually set to RS232, RS485
or RS422 mode through RUGGEDCOM ROS. For more information, refer to the RUGGEDCOM ROS User
Guide for the RUGGEDCOM RS910W.
All serial ports feature an LED that indicates the current state of the port.
Green
Off
For specifications on serial ports, refer to
CONTENTS
•
Section 4.4.1, "Serial RS232/RS485/RS422 DB9 Ports"
•
Section 4.4.2, "Serial RS232/RS485/RS422 RJ45 Ports"
•
Section 4.4.3, "Serial RS232/RS485/RS422 Fiber Ports"
•
Section 4.4.4, "Connecting Multiple RS485 Devices"
Section 4.4.1
Serial RS232/RS485/RS422 DB9 Ports
The RS910W can be equipped with serial RS232/RS485/RS422 DB9 ports. Each port can be set individually through
the RUGGEDCOM ROS operating system to operate in RS232, RS485 or RS422 mode. For more information, refer
to the RUGGEDCOM ROS User Guide for the RS910W.
The following is the pin-out description for the RS232/RS485/RS422 DB9 ports:
Figure 18: RS232/RS485/RS422 DB9 Serial Console Port
b
No internal termination is provided.
c
Connected internally.
26
State
Section 5.5, "Serial Port
5
1
9
6
Description
Link activity detected
No link detected
Specifications".
b
Pin
RS232 Mode
c
1
DCD
2
TX
3
RX
c
4
DTR
5
c
6
DSR
e
f
7
CTS
e
f
8
RTS
9
RI (No
Connection)
Shield
Serial RS232/RS485/RS422 DB9 Ports
RUGGEDCOM RS910W
Installation Guide
Name
RS485 Mode
RS422 Mode
TX/RX+
d
Common (Isolated Ground)
TX/RX-
Chassis Ground
TX+
RX+
RX-
TX-
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