Siemens SIMATIC ET 200S Operating Instructions Manual page 90

Wiring and assembly
5.4 Wiring the ET 200S
3. Place the simplex connectors into the plug adapter for the IM151-1 FO STANDARD
Bending radius for the fiber-optic cable
When placing the fiber-optic duplex core into the plug adapter and routing the cable, be sure
not to exceed the permissible bending radius of 30 mm. Refer also to the installation
guidelines for fiber-optic cable in the
PROFIBUS Networks
Reusing fiber-optic cable
Note
If you insert previously used fiber-optic cable into the plug adapter, you must shorten both
fiber-optic cores by the amount of the curved lengths and reinstall the simplex connectors.
This will prevent any attenuation losses caused by re-bent, heavily-stressed portions of the
fiber-optic duplex core.
90
interface module and the fiber-optic cable into the designated cable ducts. Snap the plug
adapter closed until you can hear clearly that the side panels have engaged.
When inserting the plug in the plug adaptor, pay attention to the correct position:
Transmitter always up and receiver always down!
5 4 3
① Plug adapter for IM151-1 FO STANDARD
② Snap the two simplex connectors closed together such that you obtain a "duplex
connector."
③ Tip: Cut the lower wire approx. 10 mm shorter than the upper wire to achieve a better
arrangement of the wiring.
④ Maximum 30 mm bending radius!
⑤ Fiber-optic duplex cable
manual.
1
2
ET 200 Distributed I/O System
Operating Instructions, 08/2008, A5E00515771-06
SIMATIC NET -
or
ET 200S