PM861m .....how to do auto tuning PID.
How to do auto tuning PID IN PM 861M controller?
What is the initial condition for it.....
Before putting in auto tuning which parameter we have to check...
We want to do Temperature Control through cooling control valve.
My experience for that kind of process is that autotuning is not the perfect solution, better is to use manual adjustment. As Harsha.D mentioned, most probably you will need some additional logic until the process variable is in reasonable limits, then activate PID (track and track value parameters before activate the PID).
Connect a variable at InteractionPar IN/OUT Parameter. Then connect the main parameters of PID to sub-variables of it, with estimated initial values, which can be modified in Online mode.
(all InteractionPar you can see in online for PID controller)
For example :
Parameter_PID_Test connected to InteractionPar