Datalogic AMT58 Series Manual page 79

AMT58x-PB Profibus®
EXAMPLE 3
Let's suppose we need to program the following encoder:
"AMT58" 25-bit multiturn encoder.
 Hardware counts per revolution = 13 bits/rev. (8192 cpr)
 Hardware number of revolutions = 12 bits (4096 rev.)
 Hardware total resolution = 25 bits (8192  4096=33554432)
 Hardware counts per revolution = 13 bits/rev. (8192 cpr)
We want to set: 2048 counts per revolution and 1024 revolutions.
Thus we will set 2048 next to the Counts per revolution item.
The Total resolution value will be: 2048 (cpr)  1024 (rev.) =
2097152 = 0x200000
10
The value to be set in the Total resolution items will be as follows:
Total resolution (high) Total resolution (low) Value
0020 0000 hexadecimal
32 0 decimal
WARNING
We recommend the Number of revolutions to be set to a value that is
a power of 2. If the set number of revolutions is not a power of 2, the
so-called "Red Zone" will be created and the encoder will necessarily
work inside its limits. For any information on the "Red Zone" refer to
section "6.8 "Red zone"" on page 41.
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