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15. Serial port connectors (9-pin COM1~6)
These connectors are for serial (COM) ports. Connect the serial port module
cable to this connector, then install the module to a slot opening at the back
of the system chassis.
EMB-BSW1
EMB-BSW1 Serial port connectors
NOTES:
•
The COM module is purchased separately.
•
COM1 also supports RS-232 / RS-422 / RS-485. See the table below and
section 3.3.6 SIO Configuration for details.
Pin
Signal
1
DCD (422TXD-/485DATA-)
3
TXD (422TXD+/485DATA+)
5
GND
7
RTS
9
RI/+12V/+5V
Chapter 2: Motherboard information
PIN 1
COM1
PIN 1
COM2
PIN 1
COM3
Pin
Signal
2
RXD (422RXD+)
4
DTR (422RXD-)
6
DSR
8
CTS
10
N.C.
PIN 1
COM4
PIN 1
COM5
PIN 1
COM6
2-17
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