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2
Hardware Installation
2.4.6 COM 4 RS232/RS485/AUX Select
1
11
1-3, 2-4, 7-9, 8-10 On:
RS232
(default)
JP7 is used to set COM 4 to RS-232 or RS-485. If the serial device
connected to this port requires 5V/12V power from the system
board, set JP7 pins 1-3, 2-4, 9-11 and 10-12 to On. This setting
automatically sets COM 4 at RS-232.
28
2
1
12
11
3-5, 4-6, 7-9, 8-10 On:
RS485
1
JP7
11
2
1
12
11
1-3, 2-4, 9-11 (12V),
10-12 (5V) On:
Auxiliary power
2
12
2
12
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