Beckhoff EtherCAT EK112 Series Manual page 46

Commissioning/application notes
Connecting and releasing the optical fiber cable at the junction
Risk of damage to the cable!
To disconnect the optical fiber cable always pull the connector to release the locking mechanism - never
pull the optical fiber cable itself.
Crossover cables
Not that crossover cables may have to be used for connecting the EK1521, EK1521-0010 with the
EK1501/ EK1501-0010.
Practical tip:
In many cases the infrared light emission can be made visible via a digital or smartphone camera at
the junction or at the coupler (see figure). Avoid 'light meeting light' when connecting the optical
fiber cable (Tx → Tx). In this case no connection can be established, and crossover cables must be
used (Tx → Rx).
Figure: Visualization of infrared light at the SC duplex connector
Use of blind plugs
To protect the transceiver from environmental influences, unused connection socket should be
sealed with the blind plugs provided!
Figure: Blind plugs in unused sockets
46
NOTICE
Version: 3.6 EK112x, EK15xx