POSITIP 855 - heidenhain - DR. JOHANNES HEIDENHAIN GmbH
POSITIP 855 - heidenhain - DR. JOHANNES HEIDENHAIN GmbH
POSITIP 855 - heidenhain - DR. JOHANNES HEIDENHAIN GmbH
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II - 3 Encoders and Measured Value Display<br />
Setting the display step with linear encoders<br />
With linear encoders, the display step depends on the<br />
• signal period of the encoder (P31.*) and the<br />
• linear subdivision (P32.*).<br />
Both parameters are entered separately for each axis. The linear<br />
subdivision can range from 0.1 to 128 depending on the signal<br />
period of your encoder.<br />
For linear measurement using nut/ballscrew arrangements and<br />
rotary encoders, calculate the signal period as follows:<br />
Signal period [µm] =<br />
Drivescrew pitch [mm] · 1000<br />
Line count<br />
Display step, signal period and linear subdivision for linear encoders<br />
Signal period [µm]<br />
Display step<br />
2 4 10 20 40 100 200 12 800<br />
[mm] [inch] Linear subdivision<br />
0.000 02 0.000 001 100 – – – – – – –<br />
0.000 05 0.000 002 40 80 – – – – – –<br />
0.000 1 0.000 005 20 40 100 – – – – –<br />
0.000 2 0.000 01 10 20 50 100 – – – –<br />
0.000 5 0.000 02 4 8 20 40 80 – – –<br />
0.001 0.000 05 2 4 10 20 40 100 – –<br />
0.002 0.000 1 1 2 5 10 20 50 100 –<br />
0.005 0.000 2 0.4 0.8 2 4 8 20 40 –<br />
0.01 0.000 5 0.2 0.4 1 2 4 10 20 –<br />
0.02 0.001 – – 0.5 1 2 5 10 –<br />
0.05 0.002 – – 0.2 0.4 0.8 2 4 –<br />
0.1 0.005 – – 0.1 0.2 0.4 1 2 128<br />
0.2 0.01 – – – – – – – 64<br />
94 Technical Information <strong>POSITIP</strong> <strong>855</strong>