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User Manual version 2.1
OPEN (660) 120/140/150
5-51
5.2. COM Ports x 4
The OPEN (660) 120/140/150 (+) II features with four
onboard COM ports located at the rear side of the chassis,
ready to connect to a wide range of serial devices. COM1,
COM3 and COM4 are RS-232 and COM2 is RS-232/485,
selected via jumper setting. Each COM port is with
+5V/+12V power capabilities on pin 9, providing easy
accommodation to a broad range of serial devices.
The COM port 5V/12 power is selected via jumper setting
on the I/O board.
Please refer to the following for the 5V/12 power selection.
COM2
+5V+12VRI
4 26
135
(Default)
J8
COM2
6
COM1
4 2
J7
5 3 1
COM4COM3 COM1
J10J9 J12J11
J10
J14
COM4
Pin 1
Pin 9
J11
J7
COM1 COM3
J12
J8
COM2
J13
J9
COM3 COM4
J14J13
5 3 1
6 4 2
5 3 1
6 4 2
5 3 1
6 4 2
5 3 1
6 4 2
5 3 1
6 4 2
5 3 1
6 4 2
5 3 1
6 4 2
5 3 1
6 4 2
5 3 1
6 4 2
Pin# COM1 COM2 COM3 COM4
#1 J11 J12 J13 J14
#9 J7 J8 J9 J10
RI(default) +12V +5V
5 3 1
6 4 2
5 3 1
6 4 2
5 3 1
6 4 2