Dear Sirs

We got Turning Machine with Siemens 810GA3

Vertical X axis had ROD426 2500 PPR encoder, same replaced with ROD426 5000PPR encoder, after
that axis is not moving as per program eg in case X has to move as per program by upto say
120mm, it is actually moving just by say 90mm hence instead of remaining above job, tool is touching job

We tried by changing MD3640 (Pulses for variable increment weighting) from 10000 to 20000, (Unit is 4 *PPR)
MD3680(Travel for variable increment weighting) = 10000 (as ballscrew pitch is 10mm)

Machine is running fine in case of Linear interpolation but unbale to follow programmed path in case of circular interpolation.

Another observation is that if axis is moved by an increment of 1000 microns (as seen on display of position screen), then physically axis is moving by just 300 microns (instead of 500 microns as it is diametric programming)

Pl advice us correct machine data to be changed

Regards,