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Connection
5.2 Power supply
Position and pin assignment
①
②
The four-pin M12 socket has the following pin assignment:
Pin
1
2
3
4
Connecting/disconnecting the power supply
NOTICE
Turn off the power supply before you insert or remove the plug of the power supply.
1. Connect the plug and socket. Make sure that they lock in place correctly.
2. Tighten the knurled screw (torque 1 Nm).
42
M12 interfaces, A-coded
M12 interface P2, D-coded
The power can also be supplied via this interface (Power over Ethernet).
Signal
L1+
L2+
M
M
Operating Instructions, 07/2019, C79000-G8976-C450-04
Assignment
24 VDC
24 VDC
Ground
Ground
SCALANCE W778-1 /W738-1
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