Steps to create vi file for PID control in 8.0 pro without specific PID addons.

Question

Per my other posts, I am testing a friend's software to see if this is what we would like to use.  I would prefer to use their software for our initial work to help offset the cost of the software.  Problem is their software is 8.0 pro without the extra PID stuff.  I am curious how one gets started creating a custom PID algorithm to be used in series between an input and an output.  I have viewed several tutorials but all seem to simply point at the PID toolkit that is not availalbe to me right now.  I realize it might be more work to create one but probably the only option at this point. 
To simply the process, lets just compare a single input and output where the software will control the output to obtain to desired input.  in  tutorial, I was following right along until the PID loop was added and that seems to be just a drop and go type of deal in which would rarely apply to a real work application. I am simply trying to learn how PID systems are written into the block diagrams.  
Hopefully my question makes sense.  

Answer 1

asdfs wrote:
Per my other posts, I am testing a friend's software to see if this is what we would like to use.  I would prefer to use their software for our initial work to help offset the cost of the software.  Problem is their software is 8.0 pro without the extra PID stuff.  I am curious how one gets started creating a custom PID algorithm to be used in series between an input and an output.  I have viewed several tutorials but all seem to simply point at the PID toolkit that is not availalbe to me right now.  I realize it might be more work to create one but probably the only option at this point. 
To simply the process, lets just compare a single input and output where the software will control the output to obtain to desired input.  in  tutorial, I was following right along until the PID loop was added and that seems to be just a drop and go type of deal in which would rarely apply to a real work application. I am simply trying to learn how PID systems are written into the block diagrams.  
Hopefully my question makes sense.  
Take a look at the PID Control Toolkit User Manual . It clearly defines the math used and there is absolutely nothing stoping you from writing that code yourself.
What you will not get by doing it yourself is the auto-tuning as well as all of the supporting and helper sub-VI along with the polymorphic versions that will support arrays of PIDs.
If you write it yourself and it work good please post up your version for others to review or use.
Have fun,
Ben
Ben Rayner
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