The process can be controlled manually by changing duty cycle directly. The manual control can even interrupt the AutoTune and PID process.

To start manual control, the control bit ZoneData.tsProcessSet.wControlWord.3 (enable manual control) is set and the control state will change to Manual. After that, the manual duty cycle ZoneData.tsProcessSet. iManual_DutyCycle can be changed to output the control value directly.