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BEA--220265-EN-04
CCD array camera OptoLine OL 80..
7.8 Camera calibration
7.7.3 Configuring the 3rd to 8th measured values:
Proceed as for configuring the 2nd measured value for all fur-
ther measured values that are to be output.
First enter the camera CAN address, then set one sub ad-
dress (parameters 48 to 53) and initiate a reset. Finally, set
the operating mode of the new measured value.
7.7.4 Deactivating the output of measured values:
➜
Call up setup editor
➜
Enter the camera device number in parameter 0.
1 for the camera
➜
Enter the camera group number in parameter 1.
0 for the camera
➜
Set the sub address (parameters 47 to 53) of the measured value
that is to be deactivated to 00.
0.0 in parameter 47 for the second measured value
➜
Enter a 1 (reset) in parameter 3, then change parameters to initi-
ate the reset.
To achieve a uniform reference variable for control or measuring
system signals, all sensors and actuators must be calibrated in rela-
tion to this uniform reference variable.
There are two different calibration procedures for the camera,
standard calibration and template calibration. The latter is intend-
ed for cameras implemented in lamination processes.
7.8.1 Standard calibration
For camera calibration a template is required that is inserted in the
camera measuring range instead of the web. See illustration oppo-
site.
The template must lie within the measuring range set in the
first measuring value (see camera configuration). It must
be positioned on the same plane as the web will run subse-
quently. It should cover as large an area of the measuring
range as possible, approx. 2/3 of the web width.
The camera resolution can be calculated from the width of the tem-
plate and the distance measured:
Standard calibration
2/3
web
width
Resolution per pixel
=
template width
covered pixels
➜
Position the template in the camera visual range.
➜
Call up setup editor, see setup editor section.
