compressor control loop

[Team1789]

We cannot get our compressor to work. We have in the begin VI compressor open, set refnum, start. DIO 1, Relay 1, and Digital component 1. we have placed the compressor loop in periodic VI under enabled. We have close VI get refnum. We've checked our spelling and our code seems to be right. We are not sure what is wrong. When the control loop is in the periodic VI it seems to create an error where the robot drive is not running fast enough.

[Mark McLeod]

Is the name you gave the compressor in Begin, identical in every way (spaces, upper/lowercase) to the name used in Periodic Tasks?

Are there any error messages displaying on the Driver Station Diagnostics tab?

[Team1789]

Yes we have checked and double checked the spelling, at first we didn't have the control loop enabled in the periodic task and the relay light on the Crio would never come on like it was programmed. Then I found you have to enable it in the periodic tasks, but then it slows down the left and right drive in tele op? I did have the relay light come in once somI know it works on the ds.
Team 1789

[Team1789]

Yes the one that says that the loop that controls the robot drive is not running fast enough I think it is error 4401, I don't have it ight in front of me.