Datalogic AMT58 Series, Manual

Page: 91 / 435

AMT58x-PB Profibus®
34
As you can see, the encoder is required to carry out more than
93000 revolutions, this cannot be as the hardware number of
revolutions is, as stated, 4096. When this happens, the encoder falls
into an error signalling the faulty condition through the diagnostic
LEDs (see on page 13).
6.4.3 Bytes 13 … 16
Total resolution
WARNING
You can set a new values next to this
Total resolution item only if
Class 2 functionality = ENABLED; if Scaling function = ENABLED the
set resolution value is enabled and used by the encoder; on the
contrary, if
Scaling function = DISABLED you are allowed to set a
new resolution value, however it is not enabled even if sent to the
encoder: the encoder still goes on using the default value uploaded
from the GSD file, NOT the new entered value, until you enable the
Scaling function See the section section “6.4.1. Byte 10 – Operating
parameters”.
This parameter is intended to set the number of distinguishable steps
over the total measuring range. The total resolution of the encoder
results from the product of
Counts per revolution by Number of
revolutions.
Byte 13 14 15 16
Bit 31-24 23-16 15-8 7-0
Data 2
31
to 2
24
2
23
to 2
16
2
15
to 2
8
2
7
to 2
0
You are allowed to set any integer value less than or equal to the
Hardware total resolution. However we suggest setting a value that is
a power of 2.
Default = 16777216 (min. = 1, max. = 33554432) for AMT58 multiturn
encoder
NOTE
Please note that
Number of revolutions is:
Total resolution
Counts per revolution
WARNING
If you set a value greater than the maximum allowed value (i.e.
greater than the Hardware total resolution value), the encoder falls
into an error signalling the faulty condition through the diagnostic
LEDs (see on page 13).
WARNING
When you set a new value next to the
Total resolution item, please
always check also the Counts per revolution item value and be sure
that the resulting number of revolution complies with the Hardware
number of revolutions of the device.