CMM-M 3.9SP2 - X and Y movement restricted to X=250 & Y200

CMM-M 3.9SP2 - X and Y movement restricted to X=250 & Y200

Sirs,

We are using CMM-M 3.9 SP2 on Nikon VMZ-R4540.

Suddenly it has been observed that the machine is not moving beyond X=250 and Y=200.
However this issue not been observed when We use CMM-M 3.8 or Nikon AutoMeasure on same machine

We have checked all settings in the Machine setup, all found ok including working volume.

Kindly Help.