On a long press: an increase dimming order will be sent if the light is found
to be off (according to the status object). On the other hand, a decrease
order will be sent if it is found to be 100%.
On a short press: a switch-on order will be sent if the light is found to be off
(according to the status object). On the other hand, a switch-off order will
be sent if it is found to be on (value greater than 0%).
Note that the device considers that the current light level is the value of a
specific one-byte object provided to be written from the KNX bus (i.e., to
receive feedback from the dimmer). This object is internally updated after a
short or long press, but linking it to the real dimmer status is highly advisable.
Under a “state-dependent” LED illumination, the LED will remain on/off
according to the value of the aforementioned status object (i.e., off when the
value is 0% and on in any other case).
Note: after a bus recovery, the light dimmer should send back the status
object so the control and the LED update their own state, instead of simply
recovering the previous one.
Shutter: implements a one-button shutter control that sends orders to the
KNX bus, which can then be executed by an actuator.
Two control types can be configured:
Standard: the device will react to both long and short presses, being
possible to send the bus the following commands:
Move (raise/lower) orders (on long presses).
Stop/Step orders (on short presses).
Being a one-button control, the direction of the motion will alternate
(upwards/downwards) for both the move and the step orders after every long
press. However, there are some exceptions to this alternation:
On a short press: a step-up order will be sent if the last long press
made the shutter move up, or if the current position is found to be
100%. On the other hand, a step-down order will be sent if the last long
press made the shutter move down or if the current position is found to
be 0%.
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