SFA-5000 • SFA-10000 DeviceNet
6 Total measuring range
WARNING
This attribute is active only if the
”=1”; otherwise it is ignored and the system uses the physical values (
and
9 Physical number of revolutions
) to calculate the
position information.
This attribute sets a custom number of distinguishable steps over the total
measuring range. In other words, this attribute allows to set the length of the
travel the encoder has to measure expressed in number of distinguishable steps
(number of information). The total resolution of the encoder results from the
product of
by the required
Number of revolutions
.
You are allowed to set whatever integer value less than or equal to the
overall
hardware resolution
(see the encoder identification label). The overall
hardware resolution results from:
8 Physical resolution/revolution
9 Physical number of revolutions
We recommend the
Number of revolutions
to be set to a power of 2.
The set
Number of revolutions
results from the following calculation:
Number of revolutions
=
Setting the
Number of revolutions
to a value which is a power of 2 is meant
to avoid problems when using the device in endless operations requiring the
physical zero to be overstepped. If you set the
Number of revolutions
which is
not a power of 2, a counting error is generated before the physical zero.
Default = 33 554 432 (min. = 1, max. = 33 554 432)
WARNING
When you set a new value next to the
attribute value and be sure
that the resulting number of revolutions complies with the Hardware number of
revolutions of the device (4,096 revolutions).
Let's suppose that the encoder is programmed as follows:
: 8,192 cpr
= 33 554 432
10
= 8,192 (cpr) * 4,096 (rev.)
Let's set a new total resolution, for instance:
= 360.
must be greater than or equal to the
, the above setting is not allowed.
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Содержание SFA-10000-FD
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