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Forum Post: Re: PID Function Block behaviour in MAN mode

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It's faceplate and control studio. Its a pcsd template so will have a AO block. I forgot you can limit the rate of change via the AO. When I'm back at work tomorrow I will check but I'm sure you are correct. Thanks.

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On 4 Sep 2014, at 18:08, "Youssef.El-Bahtimy" <bounce-YoussefEl-Bahtimy@community.emerson.com> wrote:

Are you seeing this behavior only when performing the change through a faceplate or does this also happen via control studio?  

If through control studio also, is the PID output cascaded into an AO or is it direct to I/O?  If cascaded into an AO, is there a SP Rate limiter placed on the AO? (Is it possible the feedback you are looking at is actually the AO/PV, and it is rate limited, in other words)


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