Detailed No Read Message

Important: In the case where the conditions set in Bad Symbol/No Symbol Qualification are met, then the Bad Symbol or No Symbol message output will override the No Read Message or the Detailed No Read Message, if either is enabled.

Usage:	Use this option to cover more detailed reasons for decode failures.
Definition:	Outputs a No Read message followed by an additional message (an Image Processing Results Code) indicating the reason a symbol failed to decode.

For example, in the following output: "No Read d_1, E_2", d and E are symbology IDs for Data Matrix and UPC respectively. The message means that Data Matrix and UPC are enabled (and other symbologies are not), and that both failed to decode. The reason for the failing Data Matrix 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 is interpreted here:

2D Symbols:

• Failed to locate symbol (no finder pattern).

• Failed to locate four corners or failed to qualify user defined dimensions (in pixels).

• Failed to locate clock patterns or failed to qualify user defined orientation (0-359 degree).

• Failed to validate clock patterns or failed to qualify user defined symbol size (clock element count).

• Failed to decode symbol.

Linear Symbols:

• Failed user defined minimum number of bars.

• Failed to decode start/stop character (doesn't apply to UPC, GS1 DataBar, or MicroPDF417).

• Failed user defined minimum number of scan lines that qualify for the minimum number of bars.

• Failed to decode.

• Failed to decode UPC supplemental.