SICK Ranger E - Page 73

Reference Manual Chapter 7
Ranger E/D
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Ranger E Parameters
When using two thresholds, the Output select parameter can be used for specifying in
detail how the component should determine the range value:
 If the maximum intensity is above both thresholds, the component can use both of the
thresholds or just one of them.
 If the maximum intensity is above Threshold 1 but below Threshold 2, the component
can use Threshold 1 or set the range to missing data.
The sensor image can also be filtered before determining the range, using a median and a
morphology filter:
 The median filter calculates a median value of 3 columns (actual column and its left-
right neighbors) before the range algorithm is applied.
 The morphology filter uses the maximum (expand) or minimum (shrink) value of 3–5
rows (actual row and 1 or 2 rows above and below).
Filters are applied after the thresholds. If both filters are used, the morphology filter is
applied before the median filter.
Parameter Description
Edit
while
meas-
uring
Enable Activates or deactivates this component in the configuration.
0 = Deactivated
1 = Activated
Start row The first sensor row to acquire data from.
Values: 0–511. Default value: 0.
Number of
rows
Number of rows to acquire algorithm data from.
Values: 16–512. Default value: 512.
Acquisition
direction
Specifies whether to start at the bottom or the top of the ROI when
searching for the laser line. Default: 0.
0 = Start at bottom
1 = Start at top
x
Range axis Specifies whether to measure the range from the bottom or the top
of the ROI, depending on the acquisition direction. Default value: 0.
Acquisition direction: Range
axis
0 1
0 Highest value at top
of ROI
Highest value at
bottom of ROI
1 Highest value at
bottom of ROI
Highest value at top
of ROI
x
Exposure
time
Time in microseconds during which the sensor is exposed to light.
Values: 10–50 000. Default value: 5000.
x
Laser pulse
time
Length of the pulse on the laser trigger output (Out2) in microsec-
onds.
Values: 0–20 000. Default value: 0 (no pulsed laser)
The pulse time must be shorter than the exposure time and the
cycle time (as set in the Measurement configuration).
x
Pulse
polarity
Polarity of the laser pulse. Default value: 1.
0 = Active low
1 = Active high
x
Gain Factor to amplify the analog sensor data before AD conversion.
Values: 1, 3, 4. Default value: 1 (No amplification).
x
Threshold 1 First (low) threshold level.
Values: 0–255. Default value: 50.
x
Threshold 2 Second (high) threshold level.
Values: 0–255. Default value: 70.
x