Visual Indicators - Honeywell MS2421 Installation And User Manual

Visual Indicators

Blue LED is located near the bottom corner of the vertical
output window. When the scanner is ON, the flashing or
constant illumination of the LED indicates the status of the
scanner and the current scan.
No Blue LED
The blue LED will not be illuminated if the scanner is not
receiving power from the host or transformer. They are
also not illuminated when all lasers are turned off.
Steady Blue
When all lasers are active, the blue LED is illuminated.
The blue LED will remain illuminated until all lasers are
deactivated.
Figure 32. Blue LED
Steady Blue and Single blue Flash
When the scanner successfully reads a bar code, the blue LED will flash and the scanner will beep once. If the
blue LED does not flash or the scanner does not beep once, then the bar code has not been successfully read.
Blue LED Off
After a successful scan, the scanner transmits the data to the host device. Some communication modes
require that the host inform the scanner when data is ready to be received. If the host is not ready to accept
the information, the scanner's blue LED will remain off until the data can be transmitted.
or
This indicates the scanner may be waiting for communication from the host.
Flashing Blue
This indicates the scanner is in program mode. A razzberry tone indicates that an invalid bar code has been
scanned in this mode.
or
If the unit is in sleep mode, the blue LED will flash once every 15 seconds.
or
This indicates there is an error active on the diagnostic indicator display (see Error Codes on page 38). The
scanner may continue to operate depending on the type of error.
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