Com Port Connector - AXIOMTEK SBC81870 Series User Manual

2.5

COM PORT CONNECTOR

COM1: COM1 Connector
COM1 is fixed as RS-232.
The pin assignment is as follows:
PIN ASSIGNMENT
1 DCDA
2 RXDA
3 TXDA
4 DTRA
5 GND
6 DSRA
7 RTSA
8 CTSA
9 RIA
10 NC
COM2: COM2 Connector
The COM2 is selectable as RS-232/422/485.
The pin assignment is as follows:
ASSIGNMENT
PIN
RS-232
1 DCDB
2 RXDB
3 TXDB
4 DTRB
5 GND
6 DSRB
7 RTSB
8 CTSB
9 RIB
10 NC
Hardware Configuration
®
SBC81870 Intel Pentium
RS-422 RS-485
TX- TX-
TX+ TX+
RX+ RX+
RX- RX-
GND GND
NC NC
NC NC
NC
NC
NC
NC
NC NC
®
M w/ DDR/VGA/Dual LAN
5 1
10
6
COM1
5 1
10
6
COM2
15