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Chapter 2
Installing the Device
IMPORTANT!
The serial console port is intended to be used only as temporary connections during initial
configuration or troubleshooting.
The serial console port implements RS232 DCE (Data Communication Equipment) on a DB9 connector. The
following is the pin-out for the port:
Figure 8: Serial DB9 Console Port
Communication Ports
Connect any of the available Ethernet ports on the device to a management switch and access the ROS console
and Web interfaces via the device's IP address. For more information about available ports, refer to
Communication
Ports.
Section 2.5
Cabling Recommendations
Siemens does not recommend the use of copper cabling of any length for critical, real-time substation automation
applications. All copper Ethernet ports on RUGGEDCOM products include transient suppression circuitry
to protect against damage from electrical transients and conform with IEC 61850-3 and IEEE 1613 Class 1
standards. This means that during a transient electrical event, communications errors or interruptions may occur,
but recovery is automatic.
Siemens also does not recommend using copper Ethernet ports to interface with devices in the field across
distances that could produce high levels of ground potential rise (i.e. greater than 2500 V), during line-to-ground
fault conditions.
12
5
1
9
6
Pin
Name
1
DCD
2
RX
3
TX
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
Reserved (Do Not Connect)
Cabling Recommendations
RUGGEDCOM RS920W
Installation Guide
Description
Data Carrier Detect
Receive Data
Transmit Data
Data Terminal
Ready
Signal Ground
Data Set Ready
Request to Send
Clear To Send
Chapter 3,
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