Aplex-technology APC-3918P Manual de usuario Pagina 30

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APC-3918P User Manual
30
LED2:
POWER LED status.
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: POWER LED status.
COM3:
(Type DB9),I/O serial port, it provides selectable RS422/RS485 serial signal output.
RS422 Type (option)
RS485 Type (option)
Signal Name
Pin#
Pin#
Signal Name
422_RX+
1
1
NC
422_RX-
2
2
NC
422_TX-
3
3
485-
422_TX+
4
4
485+
Ground
5
5
Ground
NC
6
6
NC
NC
7
7
NC
NC
8
8
NC
NC
9
9
NC
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