Why am I not seeing the LED blink faster on hardware when the waveform graph shows the signal updating?

I am using the cDAQ-9188 chassis with a NI 9476 in the 8th slot, and when I run my VI, the waveform gets updated if I change the frequency of a signal while the program is running, but the DO from the write does not get updated. I thought that write takes in the data from the digital waveform input, so I'm confused as to why the digital waveform indicator is updated with a new signal, but my LED into a DI module (9421) is not updating.
Thanks in advance for any tips and suggestions!
Speed2.vi calls Generate_PWM.vi, so Generate_PWM is a subVI inside Speed2.
Attachments:
Generate PWM.vi ‏34 KB
Speed2.vi ‏46 KB

Hi Ruthnan,
Sorry for the delay in response but after looking over that hardware it seems there should be enough counters in the chassis to support what you are doing. I believe you are getting the resource is reserved error because you have started one output task on that module thus reserving the reference. Once that task starts any additional task with get an error. It should be possible to use more than one counter in your application but it sounds like an error in the VI configuration. I am happy to help here to get an example up and running but I think it would be faster to open a service request for this issue. Let me know what you would like to do.
Patrick H | National Instruments | Software Engineer

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