Chapter 3 Hardware Configuration
BA-2501 SERIES USER MANUAL
Page: 3-10
3.4 Setting Connectors and Jumpers
3.4.1 COM1 and COM2 PORT
Port Name: COM1, COM2
Description:
COM1 and COM2 Connectors, fixed as RS-232
PIN
ASSIGNMENT
1
DCD
2
RX
3
TX
4
DTR#
5
GND
6
DSR#
7
RTS#
8
CTS#
9
RI#
COM2:
COM2 Connector, selectable as RS-232/422/485.
The pin assignments are as follows:
PIN
Signal
RS-232
RS-422 RS-485
10
DCD#
TX-
RS-485-
11
RX
TX+
RS-485+
12
TX
RX+
NC
13
DTR#
RX-
NC
14
GND
GND
GND
15
DSR#
NC
NC
16
RTS#
NC
NC
17
CTS#
NC
NC
18
RI#
NC
NC
Notes:
1.
COM2 is selectable as RS232, RS422, RS485 by BIOS setting.
2.
Default setting is RS232. Please see
Chapter 5 “Advanced – F81866 Super IO
Configuration”
for selection details.
JD09M1
