PROFIBUS-DP User Manual for Encoder - heidenhain - DR ...
PROFIBUS-DP User Manual for Encoder - heidenhain - DR ...
PROFIBUS-DP User Manual for Encoder - heidenhain - DR ...
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General in<strong>for</strong>mation<br />
1 General in<strong>for</strong>mation<br />
1.1 <strong>Encoder</strong> gateway<br />
1.2 Absolute encoders<br />
8<br />
This manual describes the installation procedures and<br />
configuration of HEIDENHAIN absolute encoders and encoder<br />
gateways with <strong>PROFIBUS</strong> <strong>DP</strong>V2 functionality.<br />
The advantages of the gateway concept is that it allows the use<br />
of small and very robust EnDat encoders, which make the<br />
encoder gateway solution suitable in applications where very high<br />
ambient temperature is a limiting factor. The encoder gateway<br />
supports singleturn encoders with up to 31 bit resolution and<br />
multiturn encoders with up to 37 bits resolution with the<br />
limitations described in this manual.<br />
With an absolute encoder each angular position is assigned a<br />
coded position value generated by a code disc equipped with<br />
several parallel fine graduations tracks which are scanned<br />
individually. On singleturn encoders, i.e. an encoder producing<br />
absolute positions within one revolution, the absolute position<br />
in<strong>for</strong>mation repeats itself with every revolution. So called multiturn<br />
encoders can also distinguish between revolutions. The numbers<br />
of unique revolutions is determined by the resolution of the<br />
multiturn scanning and repeats itself after the total resolution is<br />
reached.