Manual

AR-B9622 User’s Guide
3-9
(6) RS-232C Connector (CN10)
There are four serial ports with EIA RS-232C interface on the AR-B9622. COM A, COM B and COM C use three
on-board serial port Phone-Jack 10-pin female connector (CN10) which is located at the right top side of the card.
To configure these four serial ports, use the BIOS Setup program to do well, and COM D can be adjust the
jumpers on P1 & P2 for choice RS-485 or RS-232C.
The pin assignments of the CN10 for serial port A, B, C & D are as follows:
1
10
COM B
1
10
COM A
1
10
COM C
1
10
COM D
5
1
9
6
5
1
9
6
5
1
9
6
5
1
9
6
Figure 3-18 CN10: RS-232C Connector
CN10-A DB-9 Signal CN10-A DB-9 Signal
1 1 -DCD 2 8 -CTS / +5V
3 7 -RTS / +5V 4 6 -DSR
5 2 RXD 6 3 TXD
7 4 -DTR 8 5 GND
9 5 GND 10 9 -RI
Table 3-4 Serial Port RS-232 COM A Pin Assignment
CN10-B CN10-C DB-9 Signal CN10-B CN10-C DB-9 Signal
1 1 1 -DCD 2 2 8 -CTS
3 3 7 -RTS 4 4 6 -DSR
5 5 2 RXD 6 6 3 TXD
7 7 4 -DTR 8 8 5 GND
9 9 5 GND 10 10 9 -RI
Table 3-5 Serial Port RS-232 COM B & C Pin Assignment
CN10-D DB-9 Signal CN10-D DB-9 Signal
1 1 -DCD 2 8 -CTS
3 7 -RTS / 485N+ 4 6 -DSR
5 2 RXD 6 3 TXD
7 4 -DTR / 485N- 8 5 GND
9 5 GND 10 9 -RI
Table 3-6 Serial Port RS-232/RS-485 COM D Pin Assignment