ARK-7480 User Manual
12
2.2.5 COM2 Connector
The ARK-7480 provides a D-sub 9-pin connector, which supports one
RS-232/422/485 serial communication interface port of COM2.
The default setting of COM2 is RS-232.
The RS-422/485 mode of COM2 can be support via replacing the existing
of internal RS-232 cable to RS-422/485 cable of part number 170002175,
and adjust the jumper of JP5.
Please also refer to Section 3.4 of “COM2 RS-232/422/485 Jumper set-
ting (JP5)” for the jumper table of JP5
Figure 2.4: COM2 connector
Note: NC represents “No Connection”
Table 2.2: COM2 standard serial port pin assignments
RS-232
RS-422
RS-485
Pin
Signal Name
Signal Name
Signal Name
1
DCD
Tx-
DATA-
2
RxD
Tx+
DATA+
3
TxD
Rx+
NC
4
DTR
Rx-
NC
5
GND
GND
GND
6
DSR
NC
NC
7
RTS
NC
NC
8
CTS
NC
NC
9
RI
NC
NC
1
5
9
6
3
2
4
7 8
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