Metrologic Instruments IS4823 - Manual (Page 22)

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Transmit “NO READ” Message on Laser Timeout
If the scanning cycle terminates without scanning a bar code during the cycle, a “NO READ” message is
transmitted with the termination of the scanning cycle.
Activate the LED During the “NO READ” Transmission
The LED is activated with the “NO READ” message. The LED is also activated after a successful scan.
Enable RTS “NO READ” Pulse
A configurable RTS pulse width transmitted after the “NO READ” message has been transmitted.
Detect and Notify Mode
The external I/O pin used in the default activation mode is monitored during the inactive laser cycles. An <SI>
is transmitted when the I/O is active and an <SO> when it is inactive. Once the scanning activation cycle is
started, the external I/O monitoring status is maintained until the scanning cycle is terminated regardless of the
actual I/O level.
Continuous Blinky Mode
The scanner will continuously blink on and off, turning the scanning cycle on and off for all normal scanner
operations. If a bar code is scanned and transmitted, the same symbol timeout is maintained throughout the
cycle preventing additional scans of the same bar code when the scanner is in default mode.
Sleep Mode
Sleep Mode is a power saving mode that can be configured to occur in 10-second increments.