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Heidenhain ND960 DRO.... which parameter to tweak to get X axis reading accurate ?

Milacron

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Joined
Dec 15, 2000
Location
SC, USA
This on the Fehlmann P50.... the scales are hidden away within the table so I can't see which scale models it has....but the signal period is currently set at 40um.

The issue is, if I move X to get 1.0000" travel on the DRO, the actual movement is about 1.20". So, seeing as the signal period choices at 10, 20, 40, 100 um seems like changing to one of those would result in more drastic differences. Thoughts ?
 
I remembered the 1270[well, close enough to look it up] because I once hooked an ooooooooooooooold US scale to a reader head, and it would read correctly in single thousandths[no half] in metric mode
 
Some ideas to mess with:

a. P1 (inch or metric)
b. P11 Activate scaling factor
c. P12.1 to 12.3 Scaling factor (factory setting is 1.000000
d. P31.1 to 31.3 Signal period of encoder
e. P32.1 to 32.3 Subdivision of encoder signal
 








 
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