Siemens SIMATIC Vision Sensor VS 130-2 Manual page 86

Operator Input
Part 5/5: Extras (only for VS 130-2)
Lighting & Acquisition.
The multilight function is only possible if you have connected a multiplexer and
more than one lamp. Enable the "Multilight" function in the "Lighting and
Acquisition" group box to be able to select the lamp used for the image capture
from the setup support. When using the multilight function, only one of the lamps
you select from the drop-down list box is ever active. In this mode, the result bits
cannot be output over the DI/DO interface.
Under "Autom. Exposure", you can decide whether the entire image area or a
smaller area (region of interest) is used to calculate the optimum exposure
parameters. You can change this region of interest by changing to the "Adjustment"
dialog and moving or scaling (only possible when "Freeze/ROI" mode is activated)
the red frame in the preview window.
With "Use shuttersp. offset", you decide whether or not the automatically calculated
exposure time is corrected by the value of the shutter speed offset (Part 2 of the
"Options" dialog).
Acceleration
In the "Speedup" group box, you make the settings to speed up image processing.
This is effective only when Speed = low (see Part 1 of the "Options" dialog).
You have the following options:
•
Use ROI": The region of interest set in the "Adjustment" dialog is used in the
image processing.
•
"Decoder order": Here, you specify the order of the code types in which the
processing unit attempts to decode a code when training, when reading
(without prior training) and in adjustment mode.
•
With data matrix codes, there are the speedup parameters Polarity, Dimension
and View that can each have the value "trained" or "dynamic":
Polarity:
-
When Polarity = "trained" is set, the processing unit does not decode the
read code if bright and dark dots are swapped over compared with the
trained code. When Polarity = "dynamic" is set, the processing unit
decodes the read code even if bright and dark dots are swapped over
compared with the trained code.
- Dimension:
If Dimension = "trained", the processing unit does not decode the read
code if the number of dots is different from the trained code. If Dimension =
"dynamic", the processing unit decodes the read code even if the number
of dots is different from the trained code.
- View:
If View = "trained" is set , the processing unit does not decode the read
code if it is mirrored compared with the trained code. If View = "dynamic" is
set , the processing unit decodes the read code even if it is mirrored
compared with the trained code.
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Vision Sensor SIMATIC VS 130-2/VS 130-2vcr
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