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ABB i-bus
KNX
Planning and application
4.2.3
Connection/logic
With the Logic function it is possible to connect the switching of the output with certain conditions.
Two connection group objects are available:
Initially the Switch group object is evaluated by the Logical connection 1 group object. The result of this is
then connected with the Logical connection 2 group object.
The following Logic functions are possible:
Logical
function
AND
OR
XOR
GATE
Communication object values
Switch
Logical
connection 1
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
0
closed
0
open
1
closed
1
open
Output
Logical
connection 2
0
0
0
1
0
0
1
1
0
0
1
1
1
0
1
1
0
0
1
1
1
0
0
1
closed
0
open
closed
1
open
Explanations
Output
0
The result is 1 if both input
values are 1.
0
The output is 1 if both input
0
values are 1.
1
0
The result is 1 if one of the
input values is 1.
1
1
1
0
The result is 1 if the two input
values have a different value.
0
1
1
The Switch group object is
only allowed through if the
0
GATE (connection) is open.
Otherwise receipt of the
1
Switch group object is ignored.
JRA/S 6.230.3.1 | 2CDC506083D0201 131
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