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Originally Posted by TBots
Our power distribution bored is still making a humming sound where it connects to the cRIO, and we are going to try to replace the power distribution bored.
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Have you done any of the voltage measurements I recommended in my first response? If you're getting a good 12 volts on the "radio power" output, there's probably nothing wrong with the PDB.
Is your battery fully charged? It is common for a boost regulator circuit to whine when it's working as designed.
Quote:
Originally Posted by TBots
It also give the following error on the driver station.
"FRC: The mDNS service is slow to respond. Check firewall settings."
I've turned off the firewall but it makes no difference. What could this error mean?
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It usually means that something is using a lot of CPU or network resources on your computer. However, if you have the network configured with static IP addresses as is usual for a cRIO system, the mDNS support is not necessary.
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When connecting the cRIO to the power distribution bored, what ports do the postive and negative go in? maybe we got it backwards? why are there two C's? and what does NC stand for?
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Positive goes to V ("voltage"); negative goes to C ("common"). If the power LED lights up on the cRIO, it is not wired backwards.
There are two C terminals on the PDB because it uses the same power pinout as the NI RIO on which the 8-slot FRC-cRIO was based. That device used two redundant power supplies, with two C and two V terminals. NC stands for "No Connect" (though that pin on the PDB is actually another connection to the 24 volt supply).