[foxboro] PIDA parameters

Hi List
 
I have several PIDA control block configured with the "MODOPT" parameter set to 
6.
In the FoxDoc (B0193AX - Rev N) I have found that this means that 
"non-interacting PID - sum of terms" has been selected.
 
Can somebody please explain (very briefly if possible), the difference between 
"non-interacting PID" and "PID - product of factors"?
 
Thank you.
 
 
 
 
Ashley Davey
Systems Engineer
African Products (Pty) Ltd
Gauteng
Republic of South Africa
--------------------
Tel : +27 11 458 5342
Fax : +27 11 458 5343
Mobile: +27 83 4535169
 
"All human actions have one or more of these seven causes: 
  - Chance, nature, compulsions, habit, reason, passion, desire." 
      ~ Aristotle
 

 
 
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