User manual

FL SWITCH MM HS
3-18
PHOENIX CONTACT 6874_en_09
3.2.5 FL IF 2FX ST-D
3.2.5.1 Default Upon Delivery
When the interface modules are inserted, they are preset with a data transmission rate of
100 Mbps and full duplex mode, and link monitoring is not activated for the glass fiber
ports.
3.2.5.2 Functions
– Line monitoring
According to standard IEEE 802.3, the switch monitors the connected fiber optic
cables for interrupts.
– Far End Fault Detection indicates that the connection in the direction of the partner is
not OK (the partner does not indicate a link) and therefore at least one fiber within the
glass fiber cable is faulty or has not been assembled correctly.
3.2.5.3 Connecting the ST Connectors
Figure 3-15 Connecting the ST connectors
Hot plugging
When inserting and removing interface modules, you do not have to switch off the supply
voltage. The interface modules are detected automatically and logged to the network
management.
If the FL IF 2FX ST-D interface is removed and another interface type is inserted in its
place, the ports are set to auto negotiation.
If a glass fiber interface module is inserted in an MMS that has already been
parameterized, the existing configuration remains active.
– The data transmission rate is set to 100 Mbps
– The duplex method is set to full duplex
If the module is removed, auto negotiation is enabled.
Ports that are not being used are considered cable interrupts. In addition, a glass fiber
path to a deactivated termination device is also considered a cable interrupt, as the
connected device cannot send a link test pulse because it is switched off.
To prevent dirt from entering the connectors, do not remove the dust protection caps until
just before connecting the connectors. The same applies for the protective caps on the
connectors.