Manual

PROFIBUS Network Interface
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End of Line Termination
Description
Each PROFIBUS segment start and end must have a line termination.
The splitter box has no active line termination. You must use an end of line
termination on the OUT PROFIBUS connector if you place the splitter box at one of
the ends of a bus segment.
Reference
Reference Designation
FTX DPTL12 Line termination