Programming Guide 143
Appendix A: Additional Information
RS-232 Host Commands
The RS-232 interface will accept commands from the host. Available
commands are:
• Disable Scanner
• Enable Scanner
• Reset Scanner
• Beep Good Read Tone
• Force Good Read
• Xon
• Xoff
Disable Scanner (ASCII ‘D’) - places the scanner in an operational
mode in which the scanner does not accept bar code data input from
the scan optics. NOTE: The scanner will complete any message trans-
mission in progress to the host.
Enable Scanner (ASCII ‘E’) - places the scanner in an operational
mode in which the scanner will accept label data input from the scan
optics.
Reset Scanner (ASCII ‘R’) - performs a scanner reset operation. Any
bar code data the scanner may be holding in buffers is discarded.
NOTE: After reset is executed, additional host commands may be
ignored for 30 seconds.
Beep Good Read Tone (ASCII ‘B’) - causes the beeper to sound one
‘good read’ tone if the beeper is enabled (see the section in this manual
titled, “General Features” for more information about setting the scan-
ner’s beeper functions).
Force Good Read Tone (Hex ‘01’) - causes the beeper to sound one
‘good read’ tone even if the beeper is configured as disabled.
Xoff (Hex ‘11’) - suspends current data transmission from the scanner
to the host or prevents future data transmissions from occurring.
Xon (Hex ‘13’) - permits resumption of data transmission from the
scanner to the host that was previously suspended via the Xoff
command.
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