HEIDENHAIN PROFIBUS-DP (DPV2) - Manual (Page 81)

Functionality in the PROFIBUS DPV2 device
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8.12 Operating time
The operating time monitor stores the operating time for the
device in operating hours. The operating time is saved every six
minutes in the non-volatile memory in the device. This happens as
long as the device is powered on.
If the operating time function is not used the operating time value
is set to the maximum value (0xFFFF FFFF).
Parameter Meaning Data type
Operating time The accumulated power on time Unsigned32
Table 45 Operating time parameter
Note: The parameter Operating time is only supported by
the absolute encoder and encoder gateway in DPV1.
8.13 Offset value
The offset value is calculated in the preset function and shifts the
position value with the calculated value. The offset value is stored
in a non volatile memory and can be read from the encoder at any
time. The data type for the offset value is a 32 bit or 64 bit binary
value with sign, whereby the offset value range is equal to the
measuring range of the device.
The preset function is used after the scaling function. This means
that the offset value is indicated according to the scaled resolution
of the device.
Parameter Meaning Data type
Offset value The offset value for encoders with a
measuring range of maximum 32 bits
Integer32
Offset value 64 bit The offset value for encoders with a
measuring range exceeding 32 bits.
Integer64
Table 46 Offset value parameter
Note: The offset value is read only and cannot be modified
by a parameter write access.