Table 13, Singleturn scaling parameters format, Table 14 – HEIDENHAIN PROFIBUS-DP (DPV0) User Manual
Page 36: Multiturn scaling parameters format
Encoder and Gateway functionality, DPV0
36
Format of the scaling parameters:
Octet
10
11
12
13
Bits
31-24
23-16
15-8
7-0
Data
2
31
-2
24
2
23
-2
16
2
15
-2
8
2
7
-2
0
Measuring units per revolution
Table 13
Singleturn scaling parameters format
Octet
10
11
12
13
Bits
31-24
23-16
15-8
7-0
Data
2
31
-2
24
2
23
-2
16
2
15
-2
8
2
7
-2
0
Measuring units per revolution
Table 14
Multiturn scaling parameters format
The data format for both scaling parameters is 32 bits without
sign, with a value range from 2
0
to 2
31
. The permissible value
range is limited by the resolution of the encoder. For a 25-bit
encoder with a singleturn resolution of 13 bits the permissible
value range for “Measuring units per revolution” is between 2
0
and 2
13
(8192) and for the “Total measuring range in measuring
steps” the permissible value range is between 2
0
and 2
25
(33554432). The scaling parameters are securely stored in the
PROFIBUS-DP master and are reloaded into the encoder at each
power-up. Both parameters are output data in 32-bit format.
Example of scaling and entry:
If the user wants to scale the encoder to a single turn resolution
of 4000 unique positions per revolution and a total number of turn
count equal to 3200 revolutions shall the configuration be as:
Measuring units per revolution = 4000 steps
Total measuring range in measuring units
= 4000 steps x 3200 revolutions
= 12800000
Entry in the master configuration software:
Measuring units per revolution = 4000
Total measuring range (steps) = 12800000