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Advanced Settings
confocalDT 24x1
6.4
Zeroing, Mastering
Use zeroing and setting masters to define a target value within the measuring range. This
shifts the output range. This feature can be useful, for example, when several sensors
carry out measurements simultaneously in thickness and planeness measurements.
When measuring the thickness of a transparent target using controller IFC24x1, you
need to specify the actual thickness of a master object as
Master value
.
Master value
in mm
Value
Specify the thickness (or other parameter) of a master object.
Value range: – 2 x measuring range to + 2 x measuring range
Mastering (setting masters) is used to compensate for mechanical tolerances in the sen-
sor measurement setup or to correct chronological (thermal) changes to the measuring
system. The master value, also called calibration value, is defined as the target value.
The
master value
is the reading that is issued as result of measuring a master object.
Zeroing is when you set a master with 0 (zero) as the master value.
100 %
x m
0 % Measuring range
min
Digital value
max
Output characteristic
Output characteristic after mastering
When setting a master, the sensor characteristic is moved
in parallel. Moving the characteristic reduces the relevant
measuring range of a sensor (the further master value and
master position are located, the greater the reduction).
Setting masters/Zeroing – Step-by-Step:
Place target and sensor into their required posi-
tions.
Define the
Master value
(web interface/ASCII).
After setting the master, the sensor will issue new read-
ings that relate to the master value. If you click the
Reset
master value
button to undo the mastering process, the
system reverts to the state that existed before the master
was set.
Fig. 47 Moving the characteristic when mastering
i
Mastering or zeroing requires a target object to be present in the measuring range
and affects both analog and digital outputs.
Fields with a grey back-
ground require a selection.
Value
Fields with a dark border
require the specification of
a value.
MP
Parameter available with
controller IFC24x1MP
