Problem with initializing

[vedran]

Hi,

i have one While-loop (continouse acq. daq) and inside one case-loop (with 2 cases, true and false).

1. I always start with true-case. i need to set some value on a "set value" bar, and then calculate some output. it's working.
2. when i switch to false case, it should take the value of a "output", AND initialize the bar " set value" with this new number. but just for initalizing, after that i must have controll again over the "set value" bar.
3. from false to case the same thing -> taking the value of the output and initialzing the int bar.

p.s.: i need that for my dc-motor. in true case i set some frequency, and in false case i can set the power supply value. so, i need some switch from one to other case without starting from null frequency or power every time when i change the mode.

thanx in advance

vedran

[CoastalMaineBird]

1... You VI neither uses EVENTS nor a WAIT function. Your loop ran 25 MILLION times in 10 seconds. You're hogging the CPU - put in a WAIT (100 mSec) so you don't do that.

2... You need to use LOCAL variables. They offer READ or WRITE access to a front panel object, no matter whether it's a CONTROL or an INDICATOR.

3... See the attached VI.

[altenbach]

I would just use a shift register and write to a local variable of the slider whenever the switch changes state. (Since your calculation in the two cases is identical, it can be outside the case structure).