Hardware manual

Character Contour Match Impact Reference Guide
Datalogic Automation Inc. 3-162
4. Type the characters you are trying to find into the Train String value.
5. Click the Train button.
6. Enter the characters you want to verify into the Verification String value.
7. Click the Run button.
Character Contour Match Train Modes
These train modes update the Verification Library with characters found in the input string, based on the
mode selected.
• Add
Appends trained characters to the Verification Library if they are not already recognized to be there
• Add and Replace
Performs the Add and removes characters from the existing Library which model the same letter but
are not recognized as such in the trained image
• Delete All and Add
Removes all characters from the current Verification Library and trains the new string as the Library
Reading Characters
When you click Run, the tool will read the characters within the ROI. If any character can not be read or
does not match the verification string (if there is one), then the "Success" output is False. You can adjust the
input parameters if you get too many mismatches or unreadable characters. You can also add unreadable
characters to the Verification Library, if desired.
Verification
Use the "Verification String" input value to verify that the output string is the expected string. If any charac-
ter does not match the Verification String, then the "Success" output is False. The "Verification String" can
also be used as a training string. If, during verification, a part fails, you can stop and train on that image and
the tool will use the verification string.
Verification Library Tab
The Verification Library tab displays all the characters that the Character Contour Match tool has been
trained to recognize. Select a character to type a new name for a character, click the Delete Model icon to
delete a character, or click the Delete All Models icon to delete all the characters.
Data Matrix
NOTE: This tool has been deprecated and replaced by the Code Reader tool (see page 3-167). It is docu-
mented here only for existing vision programs and is no longer supported.
The Data Matrix tool reads ECC 200 Data Matrix symbols. It can read all six AIM specified encoding
schemes and all thirty data matrix sizes, including rectangles. All special control characters, including fnc1,
upper shift, macros, and structured append, are supported. It detects orientation, reflection, and symbol con-
trast automatically. The ECC 000-140 Data Matrix codes and symbol quality grading are not supported.
Orientation refers to the rotation of the bounding rectangle with reference to the symbol. For example,
whether the finder pattern (outer ring of dots) is presented with the 'L' in the lower-left hand corner (as
shown in the example image below) or rotated clockwise 90 degrees, the symbol can be still be decoded.