ABB Busch-priOn Series Technical Reference Manual page 48

KNX Technical Reference Manual
Busch-priOn
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Priority
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The "Priority" application has 3 communication objects, a 1-bit object "Switch input", a 2-bit object "Input priority" and a 1-bit
object "Output". The telegrams received on the "Switch input" are transferred to the "Output" depending on the state of the
"Input priority" object.
The 2-bit object "Input priority" can receive and differentiate between four different values (0, 1, 2 and 3). Here, the "Output"
object is positively driven. Three different states are differentiated:
- "Input priority" has value "3": the value that is present on "Switch input" has no meaning. The "Output" is switched to
positively driven and has the value "1".
– "Input priority" has the value "2". The value that is present on "Switch input" has no meaning. The "Output" is switched off
positively driven and has the value "0".
– "Input priority" has the value "1" or "0". The "Output" is not positively driven. The "Switch input" is linked to the status bit of
the priority object OR and transferred to the "Output".
During a positive drive, changes of the "Switch input" object are saved, even if the current state on the "Output" object does
not immediately change through this. If the positive drive is terminated, a telegram transmission on the "Output" occurs
according to the current value of the "Switch input" object.
Priority objects
No. Object name
0 Switch input
1 Priority input
2 Output
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Data type
1 Bit EIS1 / DPT 1.001
2 Bit EIS8 / DPT 2.001
1 Bit EIS1 / DPT 1.001
Flags
C, W
C, W
C, T