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COM 4 RS232/RS485/AUX Select
JP11 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 sys-
tem board, set JP11 pins 1-3, 2-4, 9-11 and 10-12 to On.
COM 4 RS232/RS485/AUX Select
The table below list the pin assignment of JP11.
1
3
5
7
9
11
RS232 (default)
RS485
Auxiliary power
N. C.
EN232-
GND
MDCD4-
X_MDCD4-
+12V
Hardware Installation
JP11
JP11
1-3, 2-4, 7-9, 8-10 On
3-5, 4-6, 7-9, 8-10 On
1-3, 2-4, 9-11 (12V),
10-12 (5V) On
2
N. C.
4
SIN4
6
RS485
8
MRI4-
10
X_MRI4-
12
Vcc
2
31
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