Comtrol VS1100 Configuration Guide - Manual (Page 25)

Remote Connector 25
Building Cables
Remote Connector
The DB9 port labeled “Remote” is reserved for Comtrol Corporation
repair and maintenance use. No user-accessible signals are present on
this port.
Building Loopback Plugs
Loopback connectors are RJ45 serial port plugs, with pins wired
together as shown, that are used in conjunction with the diagnostic
software to test serial ports. The VS1000 and VS1100 are shipped
with a loopback plug. This information can help you build additional
plugs or replace a missing loopback.
Use the following information to build
loopback plugs.
• Pins 4 to 5
• Pins 1 to 8
• Pins 2 to 6 to 7
Note: Do not insert the serial port
loopback plug into the 10Base-T
Ethernet connector.
RJ45
Pin
1
2
3
4
5
6
7
8
Signal
RTS
DTR
GND
TxD
RxD
DCD
DSR
CTS