ABB i-bus
®
KNX
Commissioning
© 2008 ABB STOTZ-KONTAKT GmbH
54
What is the debounce time?
If an edge is detected at an input, the input will react immediately to
this edge, e.g. by sending a telegram. At the same time, the duration
of the debounce time T
D
starts. The signal on the input is not
evaluated within the debounce time duration.
The following example clarifies this:
After detection of an edge on the input, further edges are ignored for
the debounce time T
D
.
Distinction between short and
long operation
Options: yes
no
Using this parameter you set if the input differentiates between short and
long operation.
With option
yes
, after opening/closing of the contact it must first of all be
ascertained if a short or long operation has occurred here. Only thereafter
will a possible reaction be triggered.
Note
With
Distinction between short and long operation
, two communication
objects are visible for each input. One communication object only transmits
during short operation, the other communication object only during a long
operation.
The following drawing shows the function in detail:
T
L
is the time duration from where a long operation is detected.
If the option
no
is selected with the parameter
Distinction between short and
long operation
, the following parameters appear:
T
D
T
D
T
D
Input signal
Detected pulse edge
Without
distinction between
short/long
With
distinction between
short/long
T
L
Input signal
Possible reaction to
the input signal
Possible reaction to
the input signal
