Operating instructions

Configuration / diagnostics using remote mechanisms
5.2 Configuration with Web Based Management (WBM)
Industrial Ethernet SCALANCE X-100 and SCALANCE X-200 Product Line
5-54 Operating instructions, 09/2006, A5E00349864 Release 7
5.2.6.30 The "Plastic Optical Fiber" WBM menu
Fiber-optic cables and diagnostics
If you select the POF menu item in the left-hand panel, the following screen appears
Figure 5-39 POF Management
Here, you can see the currently available link power margin as a numerical value for each
POF port.
The link power margin indicates the attenuation on the connection between sender and
receiver that can be overcome. The higher the link power margin, the higher the attenuation
can be while maintaining a functioning link. If the link power margin sinks, the attenuation
has increased, for example due to aging or a defect. The longer the cable being used, the
lower the link power margin available.
The fiber-optic diagnostics screen appears if you click on one of the displayed ports. It
displays information on the available link power margin over time.