Siemens SIMATIC NET PROFIBUS - Operator Controls

Functional Description
3-4
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
3.6 Operator Controls
The OBT itself does not have operator controls. Care must simply be taken that
the PROFIBUS connecting cable (not supplied) attached to Channel 1 is
terminated at both ends.