Hello,
We recently changed out the z axis scale for our poreba lathe using a fanuc 15t controller, our old scale was a heidenheim lb326 with a 100?m grating scale and got replaced with a heidenheim lb302 with a 40?m grating scale. Because of the scale grating change I was thinking that I should have to change a parameter number to accommodate the increased pulses from the scale per motor revolution, but I can't find anything like that in the parameter manual or servo parameter manual. On a possibly unrelated issue when we move the machine on the z axis in the negative direction it runs smoothly but when moved in the positive direction there is a vibration in the machine, we just purchased the machine and have never ran it before the scale replacement, so I don't know if the vibration was there before the scale change. If the problems sounds like it could be a parameter adjustment I'd love the help.
Thanks.

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