Siemens XDLC Manuel d'instructions d'installation - Page 9
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PANEL
Out
P
XDLC
Return
P
PANEL
Out
P
XDLC
Return
P
Figure 5
Class A Device Loop Topologies
PANEL
Out
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XDLC
Return
I
PANEL
XDLC
Out
P
Figure 6
Class X and B Device Loop Topologies
Siemens Industry, Inc.
Building Technologies Division
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P
P
P
P
I
P
I
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9
CLASS A
P = Device(s)
(Polarity Insensitive)
No Devices used as Isolators
CLASS A (Mixed Mode)
P = Device(s)
(Polarity Insensitive)
(Max. 20 Devices between Isolators)
I = Isolator Device(s)
(Wired for Isolator Mode)
CLASS X
I = Isolator Device(s)
(All wired for Isolator Mode)
CLASS B
P = Device(s)
(Polarity Insensitive)
No Devices used as Isolators
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