Optical; Signaling Contact - Siemens SIMATIC NET SCALANCE XCH-300 Product Manual

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
The signaling contact is an event-driven or manually controlled failsafe alarm relay. Individual
alarms can be configured to trigger the relay when the associated event occurs. The relay can
also be fixed in an open or closed state.
Manually controlling the relay may be useful to:
• Verify the failsafe relay is properly connected following the installation of the device
• Verify the open/close state is caused by the device itself or some other hardware
• Keep the relay in an open/close state while troubleshooting a network issue
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".
64
of processing may remain on the connector.
connecting the cables.
supplied protective caps.
Pluggable transceiver slot/
plugged in transceiver
SCALANCE XCH-300/XCM-300
Equipment Manual, 10/2022, C79000-G8976-C585-02