Hello Karel,
As the two previous posters mentionned, the PID Control Toolkit is an add-on for LabVIEW. Once installed you will have additional libraries within LabVIEW.
But, the PID Control Toolkit is also included with the LabVIEW Real-Time module.
So if you have an application using the LabVIEW Real-Time functionality, it's better to install the Real-Time module and PID Control Toolkit together.
If I am not wrong, than you are working for a college. Your college has an active NI Academic Site License. So the good news for you is that you already have all these tools available.
Please contact your
local NI branch if you want to know who to contact within your college to get all these tools.
Best regards,
Joeri
National Instruments
Servicesg