I'm developing a real-time control loop that reads an analog input to pulse width modulate a counter/timer. I've adapted the PID_control_pwm.llb example from the example database to use AI Single Scan in the continuous scan mode. Every time the counter/timer Counter Control VI runs, it throws a -10609 error (a transfer is in progress..). I think this happens because there is only certain times in the pulse generation cycle that the timer values can be updated.
How do I coordinate timer updates with analog data acquisition? Rich
