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Can I Programmatically Read the Power Source of a cRIO-900x?

Hardware: CompactRIO>>Controllers>>cRIO-9002, CompactRIO>>Controllers>>cRIO-9004, CompactRIO>>Controllers>>cRIO-9012, CompactRIO>>Controllers>>cRIO-9014

Problem:

Is it possible to programmatically get the numeric voltage level of the cRIO power supply from the controller directly without using any external wiring?

Solution:

Currently there is not a way to read the actual numeric voltage value on the power supply lines without any external connections. The cRIO Read Power Source VI located in the related links section below is reading a general purpose I/O line on the processor that indicates what power source is currently active. The power source can be either primary (v1) or secondary (v2). Reading the actual numeric value would require an analog-to-digital conversion that is not implemented on the cRIO controllers.

In order to read the actual power source level, you must use an analog input on a separate module.

Related Links: CompactRIO Example Program: Programmatically Determine the Usage of Backup Power on a cRIO Controller

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Report Date: 03/19/2007
Last Updated: 08/20/2007
Document ID: 47I97K07

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