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Quadrus EZ Reader User’s Manual
5-7
I/O Parameters
Noread Message
Noread Message Mode
Disabled
No message is output when a noread condition occurs.
Enabled
The user-defined noread message is output whenever a noread condition occurs.
Detailed Noread Message
Important : In the case where the conditions set in Bad/No Symbol Qualification are
met, then the Bad Symbol or No Symbol message output will override the Noread
Message or the Detailed Noread Message, if either is enabled.
For example, in the following output: “NOREAD d_1, E_2” d and E are symbology ids for
Datamatrix and UPC respectively. The message means that Datamatrix and UPC are
enabled (and other symbologies are not), and that both failed to decode. The reason for
the failing Datamatrix is 1 and the reason for the failing UPC is 2. The first part of these
numbers (preceding the dot) is the relevant number and interpreted here:
2D Symbologies:
1. Failed to locate symbol (no finder pattern).
2. Failed to locate four corners or failed to qualify user-defined dimension (in pixels).
3. Failed to locate clocks or failed to qualify user-defined orientation (0-359 degree).
4. Failed to validate clocks or failed to qualify user-defined symbol size (clock element
count).
5. Failed to decode symbol.
Usage:
Used in applications where the host needs serial verification that a symbol
has not been read and especially useful in new print verification.
Definition:
When enabled, and if no symbol has been decoded before timeout or the
end of the read cycle, the noread message will be transmitted to the host.
Serial Cmd: < K714,noread message status ,noread message>
Default: Enabled
Options: 0 = Disabled 1 = Enabled 2 = Detailed Noread Message
Usage: Use this option to cover more detailed reasons for decode failures.
Definition:
Outputs a Noread message followed by an additional message (an Image
Processing Results Code) indicating the reason a symbol failed to
decode.