User manual

InZennio Z41

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Figure 51 Relative (float object) setpoint control

Example: a floating point relative setpoint control is parameterized with

a minimum offset of -10 and a maximum offset of 10, and then the

objects are linked to those from the external thermostat, which can be

supposed to have a base setpoint temperature of 25ºC. After the

parameter download, 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 its status object, and

afterwards shown by Z41 in the corresponding box. A second touch will

trigger the sending of a “1”, after which the setpoint will become 26ºC.

On the third touch, the sent value 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 remains at 35ºC, while touching the

decrease button for the first time will trigger the sending of the value

“9.5”, setting the temperature back to 24.5ºC. On the second button

press, the value “9” will be sent, and the setpoint will become 24ºC.

And so on until an offset of “-10” (setpoint of 15ºC) is reached. From

that moment, any further presses on the decrease button will re-send

the value “-10” and the setpoint will remain at 15ºC. Hence, this type of

control permits regulating the setpoint temperature 10ºC (for example)

above or below a certain base setpoint temperature.

Important: the control object for the floating point relative setpoint control

has its Write flag enabled with the intention of permitting the reception of

feedback from the thermostat, which may reset or modify the status of the

offset for any reason at any time. This feedback allows that Z41 updates

its own value to equal that from the external thermostat. Thinking of the

above example, if Z41 receives the value “0” after having the user

performed three presses on the increase button (therefore, after having