Baumer BA UNxK09 IO - Manual (Page 13)

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24.04.2012/haa Frauenfeld, Switzerland
5.2.4 Hysteresis
Switching point:
When moving towards the sensor/trigger point the sensor commutates exactly at the trigger point taught.
When moving away from the sensor’s trigger point the hysteresis is added (see figure 6).
Figure 6: Hysteresis of switching point
Switching window:
When moving towards the window trigger points from either direction the sensor commutates exactly at the
trigger points taught. Once the target is „leaving“ the window a hysteresis is added to either one of the two
trigger points (see: figure 7).
Figure 7: Hysteresis of switching window trigger points
5.2.5 Error handling
The measuring range limits taught lie beyond the sensor’s max. measuring range (Consult sensor
specification sheet for applicable range):

Numerical Teach-in: writing of Switching points work not possible, error massage Parameter
value out of range

Teach-in on object: measured value in Switching points interim is set to FFFF hex, error massage
Parameter value out of range. Transfer of data from the interim register to the work register is not
possible, error message Parameter value out of range.
5.3 Averaging
5.3.1 Parameter
Average: Number of measurements across which the measured value is being averaged.
-
Range of values: 0, 2, 4, 8, 16, 32, 64
- Factory setting: 4
5.3.2 Description
By averaging an adjustable number of measured values the white noise in a measuring set-up can be
minimized resulting in increased sensor repeat accuracy and resolution. Signal averaging reduces the
response time whilst the measuring speed is unaffected by this method.
Averaging algorithm: Floating average (single sided floating average value)
Averaged value x: Y_n = (Yn + Yn-1 + Yn-2 +...+ Yn-x)/x
switching bit / switching output
measuring distance