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Connecting up
6.6 Signaling contact
6.5.2
Optical
NOTICE
Failure of the data traffic due to contamination of optical plug-in connections
Optical sockets and plugs are sensitive to contamination of the end face. Contamination can
lead to the failure of the optical transmission network. Take the following precautions to avoid
functional impairments:
• Clean the end face of field-assembled connectors carefully before connecting. No residues
• Only remove the dust caps of optical transceivers and pre-configured cables shortly before
• Close unused optical sockets and plugs as well as pluggable transceivers and slots with the
LC connector technology
The attachment to Industrial Ethernet uses LC connector
technology (Lucent Connector).
6.6
Signaling contact
Information on the signaling contact
• The signaling contact is a floating switch that signals error states by interrupting the contact.
If an error occurs, the signaling contact opens. In normal operation, the signaling contact is
closed.
• The signaling contact is connected using a 2-pin plug-in terminal block (spring-loaded
terminal). The terminal block is included in the scope of delivery of the device and can be
ordered as a spare part, see section "Spare parts".
• Note the wiring rules (Page 58).
• The signaling contact can be controlled manually via the user interfaces. Information on this
can be found in the Configuration manuals (Page 8).
64
of processing may remain on the connector.
connecting the cables.
supplied protective caps.
Pluggable transceiver slot/
plugged in transceiver
Operating Instructions, 08/2023, C79000-G8976-C694-01
SCALANCE XC-400
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