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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 to the host for an on-file product
[ESC]8,[ESC]8, is sent to the host 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 operator should check the host system to understand why a
response to the scanner was not received.
Host ACK On/Off
Host ACK Responses
Command Action
[ESC] a, Double beeps to indicate a successful menu
change was made.
[ESC] b, Razz or error tone to indicate a menu change was
unsuccessful.
[ESC] 1, The green LED illuminates for 135 milliseconds
followed by a pause.
Host ACK On
* Host ACK Off
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