pid output NaN

[杨震]

Hello,everyone

         I have a pid project ,though control current of Programmable power supply to control torque(扭矩),at the program run, sometime can run good,sometime the pid output will output NaN,result the  Programmable power supply can not obtain the current ,the follow is my application and run result ,thank you for your help

[GerdW]

get rid of race conditions by replacing local variables/property nodes by wires!