Functional Ground - Siemens SCALANCE XR-300WG Series Operating Instructions Manual

Assignment of the connecting cable
The connecting cable listed in the "Accessories" section has the following pin assignment:
Contact
1
2
3
4
5
6
7
8
9
Note
Pin assignment of the RJ-11 jack on the device
The RJ-11 jack on the device has a pinout to match the RJ-11 plug of the connecting cable
mentioned above.
5.7

Functional ground

Grounding options
Grounding (functional ground) is via the mounting bracket on the device or via the grounding
screw the front of the device.
Figure 5-4
With 240 VAC variants the device is grounded via the power cable.
Functional ground
EMC disturbances are diverted to ground via the functional ground. This ensures the
immunity of the data transmission.
The functional ground must be implemented with low impedance. The connection of the
functional ground must be established directly on the mounting plate or the DIN rail terminal.
SCALANCE XR-300WG
Operating Instructions, 05/2017, C79000-G8976-C454-01
Pin assignment of the RJ-11 plug
-
-
TD (Transmit Data)
SG (Signal Ground)
RD (Receive Data)
-
Position of the grounding screw on the SCALANCE XR-300WG
5.7 Functional ground
Pin assignment of the D-sub female con-
nector
-
TD (Transmit Data)
RD (Receive Data)
-
SG (Signal Ground)
-
-
-
-
Connecting up
45