4.4.3 Serial Rs232/Rs485/Rs422 Rj45 Ports; Serial Insulated Terminals - Siemens SIMATIC NET RUGGEDCOM RS401 Installation Manual

Communication Ports
4.4.3 Serial RS232/RS485/RS422 RJ45 Ports
4.4.3 Serial RS232/RS485/RS422 RJ45 Ports
The RUGGEDCOM RS401 can be equipped with serial RS232/RS485/RS422 RJ45
ports. Each port can be set individually through the RUGGEDCOM RS401 operating
system to operate in RS232, RS485 or RS422 mode. For more information, refer to
the "RUGGEDCOM ROS Configuration Manual" for the RUGGEDCOM RS401.
The following is the pin-out description for the RS232/RS485/RS422 RJ45 ports:
8
Figure 4.10
a
No internal termination is provided.
b
The DSR, DCD and DTR pins are connected together internally.
c
In RS232 mode, the RJ45 ports conform to EIA-561 DTE, which transmit on TXD and receive on RXD.
4.4.4

Serial Insulated Terminals

The RUGGEDCOM RS401 can be equipped with serial RS485 insulated terminals. The
terminals are terminated by default from the factory. Termination provided is AC
Termination style 120 Ohm resistor in series with a 10nF capacitor. The following
details the appropriate jumper configuration for each RS485 port.
26
1
RS232/RS485/RS422 RJ45 Serial
Console Port
Port Jumper Number
1
2
3
4
a
Pin
1
2
3
4
5
6
7
8
Shield
No Termination
JP5
JP6
Removed
JP7
JP8
Name
RS232 RS485
Mode Mode
b
DSR
b
DCD
b
DTR
Common (Isolated) Ground
c
RXD
c
TXD TX/RX+
CTS
RTS TX/RX-
Chassis Ground
Jumper Position
AC Termination
Installed
RUGGEDCOM RS401
Installation Manual, 11/2022, C79000-G8976-1017-12
RS422
Mode
RX-
RX+
TX+
TX-