Siemens SIMATIC Vision Sensor VS 130-2 Manual page 21

Processing Method for Fast Reading of Data Matrix Codes and Vericodes with a
Guaranteed Read Rate up to 5Hz
Settings:
•
Speed = medium
•
Exposure:
= Manual: guaranteed read rate of 5 Hz
-
- = Auto V1 and Auto: guaranteed read rate of 3.3 Hz
These read rates are achieved under the following conditions:
•
The code dimension must not be greater than 40 x 40 dots.
•
The code must be positioned so that there is always a clearance of at least 3
dots to the edge of the image.
•
The code should not make contact with any other objects in the image (keep
the quiet zone free!)
•
To allow the code to be found quickly, there must be no other objects (bus
structures count here as well) in the image with enclosed rectangle and of a
comparable size to the trained code. (See also the two following figures.)
•
The minimum dot size is 5 pixels per dot without restrictions.
•
The view angle must be greater than 70°.
The following figure shows you an illegal constellation for guaranteed read rates:
Two neighboring objects in the image have a rectangular border of a size similar to
that of the code.
Vision Sensor SIMATIC VS 130-2/VS 130-2vcr
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