11
1.6 Serial port2 RI Pin Setting
The serial port2 (CN16) can 5V or +12V power to the serial devices via RI
pin (Pin 9) of the serial port connector. The maximum current is 1A with fuse
protection. If the output is set to 12V, make sure that you have 12V to supply to
the board.
•
JP13, JP14: for CN16, Pin 8 Selector
CN16 Pin9
JP14
JP13
RI Signal
2-3
Any is applicable
when JP 14 uses 2-3
+5V
1-2 2-3
+12V
1-2 1-2
* +5V or +12V output is fuse protected.
1.7 Serial port2 RS-232, RS-422 or RS-485 Setting
The serial port2 (CN16) can be set to RS-232 or RS-422/485 for industrial field site
application.
•
JP8: COM2 (CN16) RS-232/422/485 setting
RS-232
RS-422
RS-485
1-2
CLOSE
OPEN
OPEN
3-4 OPEN CLOSE CLOSE
5-6 OPEN OPEN CLOSE
