HEIDENHAIN PROFIBUS-DP (DPV2) - Manual (Page 74)

Functionality in the PROFIBUS DPV2 device
74
8.8.2 Total measuring range
This parameter sets the total measuring range of the encoder. The
total measuring range is calculated by multiplying the single turn
resolution with the number of distinguishable revolutions.
Parameter Meaning Data type
Total measuring range
in measuring units
The total measuring range in
measuring steps
Unsigned 32
Total measuring range
in measuring units
64 bit
The total measuring range for
encoders with a range exceeding
32 bits
Unsigned 64
Table 40 Total measuring range
Note: The parameter Total measuring range in measuring
units 64 bit is only supported by the encoder gateway.
Example: The total measuring range for a 25 bit multi turn
encoder with a 13 bit single turn resolution and a 12 bit
multi turn resolution, the permissible value range for
the "Total measuring range" is between 2 0 and 2 25
(33 554 432).
The total measuring range is calculated as below:
Measuring units per revolution x Total
measuring range = 8192 (2 13 ) x 4096 (212) = 33554432
If the encoder gateway is used and the total measuring range is
higher than 31 bit, telegram 84 and acyclic encoder parameter
65002 and 65003 must be used. In this case the 64 bit values are
used and the 32 bit values are set to zero (0) by the encoder.
Note: Telegram 84 and parameter 65002 and 65003 are only
supported by the encoder gateway.