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06.93 12 Functional Descriptions
12.13.3 Explanation of indexing function terms
Significance of number of divisions and division reference dimension
ND = Number of Divisions
DRD = Division Reference Dimension
Rotary axis: ND = 7
DRD = 360 degrees
Input resolution : 10
-3
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1
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3
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DRD
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ND
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/360.000°
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7
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4
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6
Linear axis: ND = 5
DRD = 1000 mm
Input resolution : 10
-3
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DRD
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µm
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5
1
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1.000.000 µm
6
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ND
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Illegal
range
Indexing function offset
The indexing function offset defined by how many measuring system units the indexing
position ”1” has been offset by the actual value 0.
To calculate the division, the control equates the indexing position 1 with the actual value 0. As
these two points do not coincide in most cases, this reference point can be offset. This is
done with machine data ”Division offset” in which the distance between actual value 0 and
division 1 is defined.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 12–105
SINUMERIK 840C (IA)
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