Hi there, i'm using LabVIEW 2009 with cRIO 9014 to control external DC motor as a part of actuator.
The program which i made for this task is made with PID vi control block .
My problem is that i want to intiallize the parameters of the PID vi controller block whenever the steady state error (setpoint - process variable) is changing orientaion,or in other words when it's changing from plus to minus and vice versa.
Is there any function in LabVIEW which executes only once? i wanted to implement one-time intialization of the PID controller block only in the case that the steady state error change it's orientation...
Thanks for any help!
Yaron
