No compressor light on PCM, no compressor power, no CAN recognition of compressor

[GeeTwo]

We aren't doing pneumatics this year on my team, so I'm not familiar with the new system except that I've read some of the documentation. Here are some initial questions (sort of at the "is it plugged in" level) that might help solve your problem:

• Do you have a pressure switch in your system, connected back to the appropriate terminals on the PCB? As I recall, the pressure switches are normally closed, so if you don't have one, the PCB will think that you always have full pressure.
• Same problem, different cause: Is the pressure switch working correctly? That is, when you do not have pressure on the switch, is there connectivity (that is, essentially 0 ohms) between the terminals? Are you getting connectivity between the two wires to the pressure switch at the PCB end?
• Is your PCB powered from the correct port on the PDP?
• Is the compressor connected into the appropriate ports on the PCB?
• Is the PCB in the CAN bus?
• Is the CAN bus terminated? The easiest way to do this is to have the PDP be the last item on the CAN bus, at the opposite end from the RoboRIO, and have the jumper next to the CAN connectors set to terminator on.