Siemens Simatic M7-400 Reference Manual page 409

Reusing Fiber-Optic Cables
Note
If you insert used fiber-optic cables in the plug-in adapter again, you must cut off
the bent lengths of both fiber-optic cable cores and install the Simplex connectors
again.
This avoids any attenuation losses due to parts of the cores of the fiber-optic
duplex cables being bent again and overstressed.
Inserting the Fiber-Optic Cables into the IM 467 FO
Insert the fiber-optic cables and attached plug-in adapters into the IM 467 FO.
Move the protruding handle of the plug-in adapter upwards.
Make sure that it is correctly positioned: The sender fiber-optic cable is plugged
into the receiver socket, and the receiver fiber-optic cable is inserted into the
sender socket of the fiber-optic interface of the IM 467 FO.
If the IM 467 FO is the last node in the fiber-optic network, you must close the
unoccupied fiber-optic cable interface with filler connectors (the connectors are
already in place when the IM 467 FO is delivered).
Caution
!
Do not look directly into the opening of the optical sender diodes.
The light beam could damage your eyes.
PROFIBUS DP
Figure 8-7
Bending Radius for the Fiber-Optic Cable
Make sure when you wire the fiber-optic duplex cable cores and insert them into
the plug-in adapter that the permissible bending radius of 30 mm is not violated.
See also the installation guidelines on fiber-optic cables in the SIMATIC NET
PROFIBUS Networks manual.
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
PROFIBUS DP Master Interface IM 467/IM 467 FO
Sender
R
Receiver
T
Sender
Receiver
R
Receiver
T
Sender
Inserting the Fiber-Optic Cables into the IM 467 FO
Handle
8-11