58
EB 8384-4 EN
Connections
5.2.1 Establishing communica-
tion
The communication structure between the
controller, logic solvers (PLC) or automation
system, or between a computer or work sta-
tion and the positioner(s) is implemented us-
ing a segment coupler (see Fig. 21) accord
-
ing to the PROFIBUS guidelines.
Explosion-protected versions of
PROFIBUS-PA segment couplers must be
used in hazardous areas.
A maximum of 32 positioners can be oper-
ated in parallel over a segment coupler in
one PROFIBUS-PA segment. In hazardous
areas, the number of positioners that can be
connected is reduced.
Each positioner connected in the segment
must be assigned a unique bus address be-
tween 0 and 125 (see section 7.10 on how
to proceed).
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