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LED2:
POWER LED
S1:
PWR BT: POWER on/off Button, They are used to connect power switch button. The
two pins are disconnected under normal condition. You may short them temporarily to
realize system startup & shutdown or awaken the system from sleep state.
PWR LED:
COM3:
(Type DB9),I/O serial port, it provides selectable RS422/RS485 serial signal output.
APC-3X17B User Manual
status.
status.
POWER LED
RS422 Type (option)
Signal Name
422_RX+
422_RX-
422_TX-
422_TX+
Ground
NC
NC
NC
NC
RS485 Type (option)
Pin#
Pin#
Signal Name
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
NC
NC
485-
485+
Ground
NC
NC
NC
NC
31
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