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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
1DCD Tx- DATA-
2RxD Tx+ DATA+
3 TxD Rx+ NC
4DTR Rx- NC
5 GND GND GND
6DSR NC NC
7RTS NC NC
8CTS NC NC
9RI NC NC
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9
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