Class A Device Loop Topologies; Class X And B Device Loop Topologies - Siemens XDLC Installation Instructions Manual

PANEL
Out
P
XDLC
Return
P
PANEL
Out
P
XDLC
Return P
Figure 5

Class A Device Loop Topologies

PANEL
Out I
XDLC
Return
I
PANEL
XDLC
Out
P
Figure 6

Class X and B Device Loop Topologies

Siemens Industry, Inc.
Building Technologies Division
P P
P
P
P P
I
P
I
I P
I
I I
I
I I
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P P
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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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