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Let's say our encoder is programmed as follows:
Counts per
revolution: 8192
Total resolution
Let's set a new total resolution, for instance:
As the
Total resolution
per
revolution, the above setting is not allowed. When this happens,
the encoder falls into an error signalling the faulty condition through
the diagnostic LEDs (see on page 13).
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.
WARNING
The AMT58 multiturn encoder can be configured so that it works
exactly as the singleturn encoder.
This is achieved by setting
Let's suppose the encoder is set as follows:
Counts per
revolution= 8192
Total resolution
So it follows that:
Number of revolutions =
This is exactly the configuration of the singleturn encoder.
It is of course obvious that the contrary is not possible.
Example
multi-turn encoder with 24-bit resolution
Hardware counts per revolution = 12 bit/turn (4096 cpr)
Hardware number of revolutions = 12 bit (4096 rev.)
Hardware total resolution
multi-turn encoder with 25-bit resolution
Hardware counts per revolution = 13 bit/turn (8192 cpr)
Hardware number of revolutions = 12 bit (4096 rev.)
Hardware total resolution
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= 33554432
= 8192 (cpr) * 4096 (rev.)
10
must be greater than or equal to the
Total resolution
= 8192
8192
8192
(Counts per
= 24 bit (4096 4096 = 16777216)
= 25 bit (8192 4096 = 33554432)
AMT58x-PB Profibus®
Total resolution
=
Counts per
revolution.
(Total resolution)
revolution)
= 360.
Counts
= 1
35
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