Siemens SIMATIC MV500 Operating Manual page 25

Automatic adaption with the help of the "Full program" function
The "Full program" function is similar to the function of the "READ" button. Both functions
automatically adapt the reader, but differ in some points.
Requirements
● To use the function, you need a code in the target area of the reader. Use the image
display to ensure that the code is located in the target area of the reader.
Default settings
Before starting the "Full program" function, you can define some settings which are adopted
by the automatic adaptation. These settings can shorten the duration of the function or
disable unwanted options. You can specify the following settings in advance:
● Fast code type detection
● Fast focus detection
● Set the lighting (flash or continuous light / "Image acquisition > Lighting")
● Set number of codes to read ("Decoder > Multicode")
● Define decoder steps for the codes to be expected
● Define subROIs for the expected codes
Function description
When the function is started, the reader changes to "Adaption" status, automatically
optimizes the various settings and adjusts the parameters accordingly. Automatic adaption
goes through the following phases:
1. Structure analysis
In this phase, the image area defined by the exposure ROI is divided into subROIs if
needed. The exposure and focus are set individually for each subROI. Finally, the 3 best
results - subROIs with the best sharpness values - are selected and transferred to the
next phase.
2. Decoding
In this phase, a search for code is conducted in several cycles with different filters,
sharpness values and exposures based on the result from the 1st phase. Cycles with
different setting combinations are run until a code is recognized. As soon as a code is
found in one of the cycles, the result is transferred to the next phase.
3. Optimization
In this phase, the focus and exposure are optimized again for the code type adopted from
the 2nd phase and the specified settings. Finally, the various lamp settings and image
enhancement procedures (filters) are performed again with these optimized settings to
ensure that the best read quality is achieved with the filter used.
The result of the best read quality is selected as the final result for this adaptation.
If automatic adaptation is started via the "READ" button of the reader, an alignment phase is
performed before the structural analysis. In the alignment phase, you can also align the
reader without the image display.
SIMATIC MV500
Operating Manual, 05/2019, C79000-G8976-C495-02
Application
5.1 Program
25