HEIDENHAIN PROFIBUS-DP (DPV2) - Manual (Page 86)

Functionality in the PROFIBUS DPV2 device
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Sub index 1: Operating status
In sub index 1 the status of different encoder functions can be
read out. The mapping of the respective functions is according to
the table below.
Bits Definition
0 Code sequence
1 Class 4 functionality
2 G1_XIST1 Preset control
3 Scaling function control
4 Alarm channel control
5 Compatibility mode
6..7 Reserved for the encoder manufacturer
8..31 Reserved for future use
Table 53 Parameter 65001 Sub index 1: Operating status