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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Absolute encoder installation<br />
3.3 Shielding philosophy<br />
3.4 GSD file<br />
26<br />
To achieve the highest possible noise immunity and resistance<br />
against other EMI related disturbances the bus and power supply<br />
cables shall always be shielded. The screen should be connected<br />
to ground on both ends of the cable. In certain cases<br />
compensation current might flow over the screen. There<strong>for</strong>e a<br />
potential compensation wire is recommended.<br />
In order to start using an absolute encoder with <strong>PROFIBUS</strong> <strong>DP</strong><br />
interface, a device description file needs to be downloaded and<br />
imported to the configuration software.<br />
The device description file is called a Generic Station Description<br />
file and contains the necessary implementation parameters<br />
needed <strong>for</strong> a <strong>PROFIBUS</strong> <strong>DP</strong> device.<br />
Available GSD files can be downloaded from<br />
www.<strong>heidenhain</strong>.com.<br />
GSD file<br />
Gateway functionality GSD file<br />
Absolute encoder <strong>PROFIBUS</strong> <strong>DP</strong>V2 Enc_0aaa<br />
Table 9 Available GSD file <strong>for</strong> <strong>DP</strong>V2 encoder<br />
The GSD data is saved in the <strong>PROFIBUS</strong> master and transferred<br />
once to the encoder when the system is powered on. If the<br />
encoder has been started with one GSD file and a new GSD file<br />
with a different ID-number shall be used, the encoder needs to be<br />
restarted be<strong>for</strong>e it can use the new GSD file.
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