joint 2 following error on 5i25-7i77

HI i need help i got this massage on my cnc machiane joint 2 following error on 5i25-7i77 can any one help ??

Following error means that the Z-axis has deviated by more than the allowed amount from the commanded position.

This could be caused by a number of things.

Has the machine ever worked?

at the minimum i would remove all the

"setp pid.N.maxerror .0005"

Lines, where N is x,y,z

and then verify that all axis are tuned

To many reasons for that, we need much more information about the machine and wiring etc.
If this is a new retrofit, that is to be expected.
Be sure that the enable button on the Linuxcnc can dissable the drives before you engage in tuning the motors.
If that was a working machine and now you get that error, check if the drives are enabled and also check the Linuxcnc DRO if the numbers change when you turn the motors by hand, if that is possible.

This was written a while ago, could not post it due to power outage .

I just finished diagnosing and repairing a similar problem on a machine. Z axis suddenly stopped working with following error alarms. On this occasion it had lost 1 phase to the servo because of a broken wire in the cable between the motor and the drive. We can really only guess at what your problem might be. We need more information.

thank you all i just got on this problem it is cause the my old Valuable
P = 50.0
I = 0.0
D = 0.0
FF0 = 0.0
FF1 = 1.0
FF2 = 0.0
they was t he problem and i changed to
P = 40
I = 0.0001
D = 0.0
FF0 =0
FF1 = 0.094
FF2 = 0.0001