Siemens SIMATIC NET SCALANCE W M766 Series Operating Instructions Manual page 51

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
Danger from electric shock
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 (tightening torque 1 Nm).
Power over Ethernet (PoE)
Note
Before you pull a plug via which the device is supplied with power using PoE, disable the relevant
PoE power supply.
Note
No power sourcing equipment (PSE)
The SCALANCE WxM766-1 devices cannot be used as PoE power supply for other devices.
SCALANCE WxM766
Operating Instructions, 07/2021, C79000-G8976-C617-02
M12 Ethernet interface P1 LAN PoE, X-coded, 8-pin
The power can also be supplied via this interface (Power over Ethernet).
Pin assignment, see Ethernet (Page 52)
M12 interface, direct infeed, L-coded, 4-pin
Signal
L1+
M
M
L2+
WARNING
Connection
6.1 Power supply
Assignment
24 V DC
Ground
Ground
24 V DC
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