Honeywell 8680i Series, Руководство пользователя

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8680i User Guide 39
The above example will make a scanner beep low, then medium, then high.
Example: A good read beep is required for any item on file, but a razz or error tone is required
if the item is not on file. In this case,
[ESC]7, is sent from the host to the scanner for an on-file product
[ESC]8,[ESC]8, is sent from the host to the scanner for a not-on-file product
When a bar code is scanned, the scanner enters a timeout period until either the
host ACK sequence is received, or the timeout expires (in 10 seconds, by default).
Once Host ACK is enabled, the system works as follows when a bar code is
scanned:
• The scanner reads the code and sends data to the base or Access Point to
transmit to the host system. No audible or visual indication is emitted until the
scanner receives an escape command. The scanner read illumination goes out
when there’s a successful read.
• Scanner operation is suspended until 1) a valid escape string is received from
the host system or 2) the scanner times out.
• Once condition 1 or 2 above has been met, the scanner is ready to scan again,
and the process repeats.
A time-out occurs if the scanner does not receive a valid escape command within
10 seconds. A time-out is indicated by an error tone. If a time-out occurs, the oper-
ator should check the host system to understand why a response to the scanner
was not received.
Host ACK On/Off
Host ACK On
* Host ACK Off