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Why won't the ATV320 drive in the "rdy" state will not allow programming changes

Issue:
Why won't the ATV320 drive in the "rdy" state will not allow programming changes 

Product Line:
ATV320

Environment:
All serial numbers 

Cause: 
Can't reset the drive to factory default

Resolution:
Verify Function block is disabled.   ATV32 / 320 – Disable Function Blocks - To turn off the function blocks  Go to the FULL menu enter  Fbn enter > FbCd enter and set this to STOP  Now you can go back to the factory settings   ConF > FCS > FCS1 = InI, FrY – InI, GFS – YES (2s) (all 3 in this order)  
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