4.3.1 Serial Rs232/Rs485/Rs422 Db9 Ports - Siemens RUGGEDCOM RS910 Installation Manual

Communication Ports
4.3.1 Serial RS232/RS485/RS422 DB9 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 RS910 . For more informa-
tion, refer to the RUGGEDCOM RS910 User Guide for the RUGGEDCOM RS910.
All serial ports feature an LED that indicates the current state of the port.
Green
Off
For specifications on serial ports, refer to
4.3.1 Serial RS232/RS485/RS422 DB9 Ports
The RS910 can be equipped with serial RS232/RS485/RS422 DB9 ports. Each port
can be set individually through the RUGGEDCOM RS910 operating system to operate
in RS232, RS485 or RS422 mode. For more information, refer to the RUGGEDCOM
RS910 User Guide for the RS910.
The following is the pin-out description for the RS232/RS485/RS422 DB9 ports:
Figure 4.8
a
No internal termination is provided.
b
Connected internally.
c
The Common terminal is isolated. However, there is transient voltage protection circuitry between the
Common terminal and chassis ground.
d
Cnnected internally.
e
In RS232 mode, this pin enters a high impedance state. A DTE that asserts RTS will see CTS asserted,
although the device will not perform hardware flow control.
24
State
1
5
9
6
RS232/RS485/RS422 DB9 Seri-
al Console Port
Description
Link activity detected
No link detected
"Serial Port Specifications (Page
a
Pin
RS232
Mode
b
1 DCD
2 TX
3 RX
b
4 DTR
5 Common (Isolated Ground)
b
6 DSR
d e
7 CTS
d e
8 RTS
9 RI (No
Connec-
tion)
Shield
Installation Manual, 02/2020, C79000-G8976-1029-09
30)".
Name
RS485 RS422
Mode Mode
TX/RX+ TX+
RX+
c
RX-
TX/RX- TX-
Chassis Ground
RUGGEDCOM RS910