Position and assignment
)
)
Figure 5-2
Position of the signaling contact on the SCALANCE XC-100 and the assignment of the
terminal block
Contact
Assignment
F1
Fault contact 1
F2
Fault contact 2
Signaling faults
• The signaling of errors by the signaling contact is synchronized with the fault LED "F", see
section "LED display (Page 18)".
All errors that the fault LED "F" indicates (freely configurable) are also signaled by the
signaling contact.
• If an internal fault occurs, the fault LED "F" lights up and the signaling contact opens.
• If you connect a communications node to an unmonitored port or disconnect it, this does not
cause an error message.
• The signaling contact remains open until one of the following events occurs:
– The problem is eliminated.
– The current status is entered in the fault mask as the new desired status.
5.5
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.
The IE switch has a grounding screw (fillister head screw with clamping washer und disk) for
functional ground, refer to the section "Device views (Page 13)".
The grounding screw is identified by the following symbol for the functional ground .
Follow the steps below to connect the functional ground:
Connecting up
5.5 Functional ground
SCALANCE XC-100
Operating Instructions, 06/2022, C79000-G8976-C415-06
37
