HEIDENHAIN PROFIBUS-DP (DPV0) - Manual (Page 44)

Encoder and Gateway functionality, DPV0
44
Diagnostic function Data type Diagnostic
Octet number Device
class
Software version Octet string 26-27 2
Operating time 32 without sign 28-31 2
Offset value 32 with sign 32-35 2
Manufacturer offset value 32 with sign 36-39 2
Measuring units per revolution 32 without sign 40-43 2
Total measuring range in measuring
units
32 without sign 44-47 2
Serial number ASCII string 48-57 2
Reserved for future 58-61 2
Table 20 Diagnostic message, DPV0
Note: The length of the diagnostic information of class 1
is limited to 16 bytes, compatible with previos DP
version. For PROFIBUS-DP encoders of class 2, the
length of the encoder specific diagnostic data
including the extended diagnostic header is
57 bytes.