MICRO-EPSILON optoNCDT 1220-IO Operating Instructions Manual page 10

Functional Principle, Technical Data
3. Functional Principle, Technical Data
3.1 Short Description
The optoNCDT 1220-IO uses the principle of optical triangulation, that is, a visible, modulated point of light is projected onto the target
surface.
The diffuse part of the reflection of this point of light is displayed depending on distance on a position-resolving element (CMOS) by
an receiver optic which is arranged to the optical axis of the laser beam in a defined angle.
A signal processor in the sensor calculates the distance of the point of light on the measuring object to the sensor by means of the
output signal of the CMOS elements. The distance value is linearized and output by means of the IO interface.
optoNCDT
Fig. 4 Definition of terms
1) For distance values without zero setting or mastering only, values in nanometer
optoNCDT 1220-IO
Digital value
1
0x7FFFFF05
0
MR
SMR = Start of measuring range
6
MR * 10
MMR = Mid of measuring range
0x7FFFFF06
EMR = End of measuring range
= Measuring range
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