Microscan MS-4 User Manual download pdf (Page 162)

7-6 MS-4 Imager User’s Manual

No Read Message

No Read Message Mode

Disabled

No message is output when a No Read condition occurs.

Enabled

The user defined No Read message is output whenever a No Read condition occurs.

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.

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:

1. Failed to locate symbol (no finder pattern).

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

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

degree).

4. Failed to validate clock patterns 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 No Read message will be transmitted to the

host.

Serial Cmd: <K714,No Read message status,No Read message>

Default: Enabled

Options: 0 = Disabled 1 = Enabled

2 = Detailed No Read Message

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.

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Microscan MS-4 User Manual Page 162