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11. Serial Port headers (10-1 pin COM1~COM2)
These headers are for serial (COM) ports. Connect the serial port module
cable to this header, then install the module to a slot opening at the back of
the system chassis.
NOTE:
•
•
Pin
1
3
5
7
9
2-24
A B
The COM module is purchased separately.
COM1 also supports RS-232 / RS-422 / RS-485. See the table below and
section 3.3.7 SIO Configuration for details.
Signal
Signal
DCDN (422TXD- / 485TXD-)
SOUTN (422RXD+)
GND
RTSN
Ring / +5V / +12V
PIN 2
COM1
A
PIN 1
PIN 9
Pin
Pin
Signal
2
SINN (422TXD+ / 485TXD+)
4
DTRN (422RXD-)
6
DSRN
8
CTSN
10
(NC)
PIN 2
COM2
B
PIN 1
PIN 9
MIX-Q670A1
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