Datalogic AMT58 Series, Manual

Page: 89 / 435

AMT58x-PB Profibus®
32
Code sequence
The Code sequence parameter defines whether increasing position
values are output when the encoder shaft rotates clockwise (CW) or
when the encoder shaft rotates counter-clockwise (CCW). When
Code sequence = CW (0) the position information increases as the
encoder shaft rotates clockwise; on the contrary, when Code
sequence = CCW (1) the position information increases as the
encoder shaft rotates counter-clockwise CW and CCW rotations are
viewed from the shaft end.
If
Class 2 functionality = DISABLED, this is the only parameter which
can be set.
Default = 0 (min. = 0, max. = 1)
Class 2 functionality
Two device classes are defined in the encoder profile, one
mandatory class (Class 1) and one class with optional functions
(Class 2). This encoder implements functions of both Class 1 and
Class 2. For any information on the available encoder classes see
the section “6.2 Classes of the Device profile” on page 29.
0 = Disabled = Encoder Class 1 is set.
1 = Enabled = Encoder Class 2 is set.
Default = 1 (min. = 0, max. = 1)
Scaling function
When this option is disabled ( Scaling function = 0), the device uses
the hardware resolution, i.e. the hardware counts per revolution and
the hardware number of revolutions, see the encoder data on the
label applied to the device; when the option is enabled (
Scaling
function = 1), the device uses the resolution set in the bytes 11 … 16
( Counts per revolution and Total resolution ).
For a correct use of this function see sections “6.4.2 Bytes 11 - 12“ e
“6.4.3 Bytes 13 … 16“ below in the page.
Default = 1 (min. = 0, max. = 1)
WARNING
You can set new values next to the
Counts per revolution and Total
resolution items only if Class 2 functionality = ENABLED; if Scaling
function = ENABLED the set resolution values are enabled and used
by the encoder; on the contrary, if Scaling function = DISABLED you
are allowed to set new resolution values, however they are not
enabled even if sent to the encoder: the encoder still goes on using
the default values uploaded from the GSD file, NOT the new entered
values, until you enable the
Scaling function.