RSLogix 5000 PID Instruction Help

[sigma69pi]

I am looking to lock the output value of a PID block to the last known good value when the block is disabled. To allow for a smooth restart.

Can I do this with the Inhold and Inhold values? I have never used these functions before.

Any better schools of thought?

 

[TConnolly]

Tie the PID CV out back to the the CVInitValue. Trigger CVInitReq to lock and hold the CV at the last value.

There is a technote in the AB KB showing how to do this for a Low Select control - It should be simple to adapt the example to your app.