Hello together,
actually i have seven NI 6538 cards setup in an industrial pc. I want to use the solid state
digital outputs to switch things.
My Setup:
NI6528 Hardware
|_NI DAQ Tasks over the MAX ( MAX 3.1 )
|_SubVi - Basic SubVi where i can address the seven tasks with 24 Ouput Channels each. ( Labview 7.1 )
|_SubVi (0...6) - Another SubVi where i can get access to the single bits of each tasks.
|_User Level / FrontPanel->While Loop
My Problem is the following:
If i address one Card/Task everything is fine. But if i use two or more Cards / tasks
the Output states are getting unstable.
It seems everytime i set an output bit the DAQ Driver shortly pull it on low.
For example:
1. I connect a LED to a Line of one card an switch it on -> ok.
2. Than if i address a second card/tasks the LED begins to flicker -> not ok.
This is getting even worse with more cards...
With all seven cards i get a low frequency far away from a stable digital
output state.
Is the PCI Bus to slow?
Why the High Signal dont stay when i set it everytime in my whileloop?
Why the output loese his state at all?
Is there a sort of output refresh?
Please help me. Thank you.
Tom
