Specifications

A.5.5 Serial Interface (J9) Pin-outs
The COM1 RS232 serial interfaces use 8-way RJ45 connectors with the following pinouts.
Pin No. Signal Name Direction
1 RTS - Request To Send Output from board
2 DTR - Data Terminal Ready Output from board
3 GND -
4 TX - Tx Data Output from board
5 RX - Rx Data Input to board
6 CD - Carrier Detect Input to board
7 DSR - Data Set Ready Input to board
8 CTS - Clear To Send Input to board
Table A-5 Serial Port Cable Connections
The standard PC-AT serial port connector is a 9-way Male Sub-miniature D-type. The
correspondence between the VP 110/01x RJ45 serial connector pin-out and the PC-AT serial
connector pin-out is defined in the table below.
Signal Name RJ45 Pin PC-AT Pin
RTS - Request To Send 1 7
DTR - Data Terminal Ready 2 4
GND 3 5
TX - Tx Data 4 3
RX - Rx Data 5 2
CD - Carrier Detect 6 1
DSR - Data Set Ready 7 6
CTS - Clear To Send 8 8
RI - Indicator - 9
Table A-6 Serial Port Cable Connections
Specifications
A-8 VP 110/01x
123
45
6
7
8
Figure A-4 Serial Port RJ45 Connector (Front View)