A: The PID control mode control the temp accurately according to the SV value, and control or turn off heating by complicated temp changing.
The self-turning can control the temp more accurate, if the PID control is not accurate, you can set Ctrl=2 to enter in self-turning, at the first using, it’s better to control by self- turning.
Manual inhibit means cannot change the output value manually which can only control by controller automatically.
Automatic means control output by controller automatically.
Manual means you can change the output of the controller manually (Output percentage value)
You can switch the automatic and manual by the panel shift key.