Continous Digital Edition that express VI gives error-200609

Using Express vi to generate the continuous output on two digital ports of NI USB-6341 - very basic:

To test, I simply right click Create a control at the entrance to data express-vi and types in some data manually.

There are two digital lines dev1/port0/$line0 and $line0/port0/dev1 so I'm expecting this entry must be an array of two digital signals with a single line of data. Right?

Here's what it looks like and the error I get. Sampling frequency is set at 1 kHz.

In the express vi to read #samples is set to 4 (as wfm) or 1 k - it gives the same error.

  1. How can I solve this problem without go _inside_ the express generated code and change the size of the buffer, which I would like to avoid.

  2. Is the generator of express vi broken for this particular - and yet very simple and basic configuration?

The error is quite clear.  Must be given at least 2 samples.  Then change your waveform data to have a second data point for each digital waveforms.  You can just do the same as the first data point.

Tags: NI Software

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