How to use Linx Digital Read N Channel

[doljam]

Hi,  It is many years since I used Labview and I am coming back to it because I need to modify a programme I wrote almost a decade ago.  My problem is that I haven't used LabView since.  I used the programme to take numerous pressure, temperature and flow rate signals from an Arduino which I then displayed on a screen as an indicator of the health of some laboratories.  I would like to add more digital signals and I realise how much I have forgotten.  I would like to add more channels to the Digital Read N Channel vi and I see that there are two places for inputs.  Obviously one is for the number of channels to be read but I am wondering what the second is for.  Mine are currently set at 5 and 34.  I am reading outputs but I am not sure what the 34 was for.  In the past there was detailed information on each of the vis and I was wondering if this still exists.  The explanation on the website merely says that the Digital input connection is where you specify inputs.  I look forward to relearning the programme and applying it to some future projects.  Thanks.

[GerdW]

Hi doljam,

this is what I see about "Digital Read N Chans".

What exactly are you talking about?

[doljam]

Hi GerdW,

Many thanks for your reply.  I think I figured it out. The two boxes that come up when one clicks on the DI Input terminal are for the array that the vi uses.  I think that the first number is the position in the array and the second is the DI channel number from the Arduino.

I could be wrong but I'll have a play to see if my theory is correct.

Thanks again for replying and I'm sure I'll have many more questions as I get back up to speed.

[GerdW]

Hi doljam,

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@doljam wrote:

I could be wrong but I'll have a play to see if my theory is correct.

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Unfortunately you still don't even provide an image of what you are talking about…

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@doljam wrote:

I think I figured it out. The two boxes that come up when one clicks on the DI Input terminal are for the array that the vi uses.  I think that the first number is the position in the array and the second is the DI channel number from the Arduino.

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In case you forgot how an array constant looks like in LabVIEW: note the learning resources offered in the header of the LabVIEW board!

(An array constant is an array constant and not "two boxes"…)