How to monitor over current on DO 9476 line

[K-Man]

I am interested in monitor over current and status of the DO channel. I am using NI 9476 module in cDAQ-9178 chassis. My development environment is visual studio (.net). I found kind of an  example in labview.  I am able to set DO fine just want to check the status (ON/ OFF   or Over-current state).

Thanks

[Wayne_T]

K-Man,

I do not have strong knowledge in using DAQmx in .NET languages, but searching around I did find some initial info for you to look at (if you haven’t already come across these yourself).  After I found the properties in LabVIEW, I just searched the site with “overcurrent .NET” and found some initial starting points.  Hopefully this gets you started in the right direction.

[K-Man]

Hi Wayne:

Thanks a lot for the help, I think I have figured out and implemented  overcurrent code.  Have not tested it yet, code snippet below.

However, I still need to find out state of my digital outputs i.e. whether they are On or OFF state.

if(digitalWriteTask.Stream.ReadOvercurrentChannelsExist == true)

{

string[] OverCurrentChannels = digitalWriteTask.Stream.ReadOvercurrentChannels;

Console.WriteLine("Class NI, NISetDO: Over Current Detected");

foreach (String overCurrentChannel inOverCurrentChannels)

Console.WriteLine("overCurrent detected on channel"+ overCurrentChannel);

}

[Wayne_T]

K-Man,

I looked at the DAQmx channel properties list, linked here if you want to browse to the DO (digital output) settings.  There isn't any property to monitor the actual state of the line.

http://zone.ni.com/reference/en-XX/help/370469AB-01/daqmxprop/daqmxchannel/

[Dennis_Knutson]

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