PID drive paramiters?

[techkid86]

we are trying to control a drive motor using an encoder and a jaguar. it is not working in that, we have the motor set point on and off every so many seconds. we range the P up and up and up, looking for any change. it does not change until the P value is at 10*10^4, then it stops the motor, and it will not turn on again until we are at a P value of 1. we are using a single cim motor, up on blocks.

thanks in advance, don't hesitate if you need more info. ^_^