What is the Cycle Time parameter used for when the thermostatic control is PI-Continuous?

When using a thermostatic control PI-PWM, a cycle time is needed to perform the pulse width modulation. This time is configured via ETS with the Cycle Time parameter.

But, what is the Cycle Time parameter used for when the thermostatic control is PI-Continuous?

Since there is no pulse width modulation in the thermostatic control PI-Continuous, a cycle time is not required. In this case, the Cycle Time parameter is used to determine how often the PI percentage value is sent. Thus, the value sending to the bus is done through the corresponding communication object (Control Variable) in the following cases:

1. When it changes. For instance, if the last sent PI value was 83% and now the thermostat calculates 85%, the PI value is sent to the bus.

2. Cyclically. The Z38 touch panel thermostat is continuously calculating the PI value and for every given period of time (Cycle Time), the current value is sent to the bus.