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Re: fried cRio???
How were trying to measure motor current? If you were simply placing a resistor in series with the motor leads and then doing a differential voltage input to the Analog Breakout, I can't think of any way that a failure within that circuit would break the cRIO or its 9201 analog input module. I could believe that you've fried the Analog Breakout adapter module but you shouldn't be able to take down the cRIO with a resistor.
What size resistor did you use? Keep in mind that motor currents can exceed 100A for short periods. Let's just imagine that you used a 50 milliOhm current sense resistor - there would be 5V across that resistor (100 * 0.05) and 500W being dissipated for a short period of time. In other words, all resistances in the path from the battery to the motor need to be in the single digit milliOhm range to keep from frying.
More details please...
Russ
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