Aplex Technology APC-3517B - Manual (Page 31)

APC-3X17B User Manual 31
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