Siemens SIMATIC NET SCALANCE XR-300WG Operating Instructions Manual page 66

Connecting up
6.8 Functional ground
To connect the functional grounding for devices with a grounding screw, proceed as follows:
1. Loosen the grounding screw.
2. Put the grounding terminal
drawing.
3. Tighten the grounding screw
66
①
, and the grounding screw
②
with a maximum tightening torque of 1.5 Nm.
Operating Instructions, 03/2021, C79000-G8976-C454-07
②
together as shown in the
SCALANCE XR-300WG