Lika IF52, Руководство пользователя, Страница: 55 / 60

IF52
points available, which can be set in any desired distance over the full
conversion range. Between two points, the unit uses linear interpolation.
Therefore it is advisable to use more points in a section with strong curves and
only a few points where the curvature is lower.
To specify your desired linearisation curve, you must set the
Linearisation
Mode
register to either 1 or 2 first.
Use registers
P1(x)
to
P16(x)
to specify the coordinates on the x-axis. These are
the original SSI data generated by the sensor. These settings must be expressed
in percentage (%) of the full scale.
Now enter the desired values to registers
P1(y)
to
P16(y)
. These are the values
that the parallel output will generate instead of the x- values.
As an example, the value set next to
P2(y)
will be used instead of the encoder
value
P2(x)
etc.
NOTE
•
X-registers must use continuously increasing settings, i.e.
P1(x)
item
must have the lowest setting and
P16(x)
item must have the highest
setting.
•
All entries use a percentage format which is xx.xxx% of the full scale.
Setting 0.000% means zero output while setting 100.000% means full
scale output.
•
With
Linearisation Mode
set to
1
, it is compulsory to set
P1(x)
register
to 0% and
P16(x)
register to 100%. Linearization is defined in the
positive range only and the negative range will be a mirror image of the
positive range with reference to zero.
•
With
Linearisation Mode
set to
2
, it is compulsory to set
P1(x)
register
to –100% and
P16(x)
register to +100%. This enables the user to set
curves which are not symmetric to the zero position.
MAN IF52 I_E 1.1.odt 10 – Scaling and linearisation functions 55 / 60