Serial Port Connectors; Com1 - Xycom 9462 System Manual

Serial Port Connectors

There are two serial ports supported on the AHIP4+ and the AHIP5+ boards.

COM1

COM1 consists of two connectors attached to one logical port. Only one connector can
be used at a time either the RS-232 port or the RS-485 port. All termination is done out-
side the unit.
"A" denotes the lower connector (RS-232) and "B" denotes the upper
connector (RS-485).
For TXD termination, connect a 150Ω, ½ watt resistor from pin 3B to pin
4B, with pin 1B connected to pin 3B and pin 2B connected to pin 4B. For
RXD termination, connect a 150Ω, ½ watt resistor from pin 8B to pin 9B,
with pin 6B connected to pin 9B and pin 7B connected to pin 8B.
RS-232
Pin Signal
1A DCD1
2A RXD1
3A TXD1
4A DTR1
5A GND
6A DSR1
7A RTS1
8A CTS1
9A RI1
Note
Note
RS-485
Pin Signal
1B TXD-
2B TXD+
3B TXD TERM -
4B TXD TERM +
5B GND
6B RXD-
7B RXD+
8B RXD TERM +
9B RXD TERM -
Appendix C – Pinouts
C-3