![]() for example: with a CV setting of 0, the oven should have ZERO heat input. ![]() once the PID has been removed, then make sure that you can MANUALLY enter values into the CV location and MANUALLY control the temperature of the oven. ![]() hooking up the automatic cruise-control too soon just adds an additional level of complexity to the problem. if we were designing a cruise-control system for a car, we'd make sure that the gas pedal and the speedometer both worked correctly BEFORE we tried to set up automatic control. suggested plan of attack: take the PID rung completely out of your program to begin with. the CV for the output module needs to follow the same basic plan. other modules require something like an SCP instruction to do the scaling. some modules allow "scaled for PID" selections which will take care of this for you. basic idea: the PV (input) for the PID should be scaled from 0 to 16383 in order to give optimum results. for one thing, we need to know how your analog input and your analog output will be scaled. Greetings Bill, as everyone else has already said, we need more information in order to give you specific detailed help.
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