Physical quantity
Select the unit of measurement and physical quantity for the setpoint and process value in the "Controller type" group. The setpoint and process value will be displayed in this unit.
Control logic
An increase of the output value is generally intended to cause an increase in the process value. This is referred to as a normal control logic.
PID_Compact does not work with negative proportional gain. Select the check box "Invert control logic" to reduce the process value with a higher output value.
Examples
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Opening the drain valve will reduce the level of a container's contents.
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Increasing cooling will reduce the temperature.
Start-up behavior after reset
To change straight to the last active operating mode after restarting the CPU, select the "Enable last mode after CPU restart" check box.
PID_Compact will remain in "Inactive" mode if the check box is cleared.