PROFIBUS
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2.5 Assembling optical fiber cables

The optical fiber cables listed in Table 2 are standard for PROFIBUS.

Table 2: Optical fiber cables for PROFIBUS

Use for line lengths Type of fiber Fiber diameter
Core/Sheath		 Operating wavelength
up to 100 m Plastic Optical Fiber 980/1000 µm 650 nm
up to 500 m PCF or HCS fiber * 200/230 µm 650 nm
up to 3 km Multimode fiber optic 50/ 125 µm
62,5/ 125 µm		 860 nm
up to 15.km Single mode fiber optic 10/ 125 µm 1300 nm

* PCF and HCS are trademarks

The technical data of the optical fiber components can be found on the manufacturer’s data sheets.
 


Either Plastic Optical Fibers or PCFTM™/HCSTM™ fibers can be used at the same optical interface. Multimode and single mode optical fibers each require their own interface design.
The required components for an optical path may be determined as follows:

  1. Determine the length of the path to be covered.

  2. Determine the fiber type required for this path according to The optical fiber cables listed in Table 2 are standard for PROFIBUS. 2.

  3. Select a suitable device for this fiber type.

  4. 3. The device description shows which connector type fits the optical interface of the selected device.

The assembly of an optical fiber cable depends upon the fiber and connector type. In general, optical fiber cables with a smaller fiber diameter require a higher precision in assembly. Correspondingly, assembly tools will be more expensive.
 
   
 
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