Siemens SIMATIC ET 200M Operating Instructions Manual page 73

Reusing used fiber-optic cables
Note
If you once again insert the used FOC in the plug adapter, then you must shorten the two
FOC wires around the bent lengths and then reinstall the Simplex connector.
This way you avoid any possible attenuation loss on account of re-bending and highly
stressed parts of the FOC duplex wires.
Connect the FOC to the IM 153-2 FO
1. Insert the FOC with the already installed plug adapters into the IM 153-2 FO.
Ensure that the positioning is correct: The transmitter FOC is inserted in the receiver jack
of the FOC interface of the IM 153-2 FO and the receiver FOC in the transmitter jack.
2. Fold the protruding plug grip upward.
3. If the IM 153-2 FO is the last node of the FOC network, then you must close the unoccupied
FOC interface with dummy plugs (plugging in factory state in the IM 153-2 FO).
Figure 5-1
①
②
③
ET 200M
Operating Instructions, 04/2022, EWA-4NEB7806006-09
CAUTION
Do not look directly into the opening of the optical transmit diodes.
The emitted light beam could damage your eyes.
Connect the FOC to the IM 153-2 FO
Receiver
Transmitter
Grip
Connecting
5.2 Connecting PROFIBUS DP
73