Festo Кабели и принадлежности - Manual (Page 46)

3. Installation
3−10
Festo P.BE−SPC200−COM−PDP−E N en 0901c
3.4 Connection for optical−fibre waveguide
The following types of cables can be used for transmission
with the PROFIBUS:
ć Cable−bound transmission (screened two−wire cable)
ć Optical−fibre cable (plastic and fibre glass)
Optical−fibre waveguide technology is to be recommended
when transmission is affected by heavy interference, as well
as for extending the transmission range when high baud rates
are used.
This also offers the following advantages:
ć high EMC and ESD protection due to the optical
transmission of signals
ć protection against lightning
ć potential isolation of the individual DP slaves. No
equalizing currents can flow through cable screening.
The PROFIBUS−DP interface of the SPC200 has been designed
in accordance with specification EN 50170 volume 2, and
therefore supports the control of network components for
optical−fibre waveguides.
Example of optical−fibre waveguide network components:
ć Siemens Optical Link Module (OLM) for PROFIBUS plus
ć Siemens Optical Link Module (OLP) for PROFIBUS