Setting Zero and Masters. MICRO-EPSILON optoNCDT 2300

Control Menu, Set Sensor Parameter

7.4.5 Setting Zero and Masters

By zeroing and mastering you can set the measurement value to a set point in the measuring range. The output range is moved thereby. This function makes sense, for example, for several adjacent measuring sensors or in the case of the thickness and planarity measurement.

Master value in mm

Value Data, for example of the thickness, of a master piece.

Value range max. – 2 x measuring range up to + 2 x measuring range

Setting masters is used to compensate mechanical tolerances in the measurement setup of the sensors or to adjust the temporal (thermal) changes in the measurement system. The masters measurement, also a known as the calibration measurement, is given a set point.

The value which is given during measurement on the sensor output of the “mastering object“ is the “master value”. The zero-setting is a characteristic of the mastering, because here the master value is „0“.

64876

Output characteristic

When mastering the sensor‘s characteristic is parallel displaced. The displacement of the characteristic curve reduces the usable measurement range of the sensor the further the master value is away from the master position.

Sequence for mastering /Setting zero:

Bring target and sensor in the desired position together.

Send the master command.

32760

643

Output characteristic after mastering x m

100 %

The master command waits for 2 seconds on the next measurement value and masters it. If no measurement value is received within this time, for example by external triggering, the command returns with the error “E32

Timeout“ back.

After the mastering, the sensor gives new measurement values, related to the master value. The non-mastered condition applies by means of a reset with the button Reset master value .

Fig. 33 Characteristic for mastering

“Setting masters“ or “Setting zero“ requires that a target is within the measurement range “Setting masters“ or “Setting zero“. “Setting masters“ and “Setting zero“ has an influence on the digital outputs.

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