InZennio Z41
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Finally, when “Relative (float object)” is selected, the control will send 2-
byte floating point values. However, these values will correspond to the
particular increment or decrement (or offset) to be applied each time. This
offset refers to a base temperature and will always be a multiple of 0.5ºC.
As the user touches the increase/decrease buttons in the box, this offset
will vary, always within a certain range defined through the
Minimum
Offset
and
Maximum Offset
parameters.
Figure 55
Relative (Float Object) Setpoint Control
Example: suppose the following parameterisation:
Relative setpoint with a floating point object,
Minimum offset of -10,
Maximum offset of 10.
The objects are linked to those from an external thermostat, which can be
supposed to have a base temperature setpoint of 25ºC. After the
parameter download:
1. The first touch on the increase button will trigger the sending of the
value “0.5”, so that the thermostat sets the setpoint to 25.5ºC. This
value will be then sent through the status object, and afterwards
shown by Z41 in the corresponding box.
2. A second touch will trigger the value “1”, after which the setpoint will
become 26ºC.
3. On the third touch, the value sent will be “1.5”, so the setpoint will be
set to 26.5ºC.
And so on until the offset sent becomes 10 (setpoint of 35ºC). Any further
presses on the increase button will send the value “10” again, so the
setpoint will remain at 35ºC, while touching the decrease button for the
first time will trigger the sending of the value “9.5”, setting the temperature
