Appendix 2 Control Commands - Denso QK31-R User Manual

Appendix 2 Control Commands

Control commands refer to commands that are exchanged between the host computer and the scanner via the
communications line.
Some of the control commands that the host computer issues are functionally equivalent to some parameters that can
be set with the QR-coded parameter menu (refer to Chapter 11). Settings of those control commands have priority
over settings made with the QR-coded parameter menu.
Note that turning off the scanner clears control command settings so that settings made with the QR-coded parameter
menu take effect unless the PW command is sent to the scanner for saving control command settings into the flash
ROM.
If commands other than the ones listed below are sent to the scanner, the scanner operation is not assured.
Note: Selecting the USB keyboard interface disables the control commands.
Note: Until the completion of execution of a specified control command, the subsequent command will not be
executed.
Note: During configuration with the QR-coded parameter menu, the scanner does not receive any control command
and returns the "NG" response.
Note: After recognition of the virtual COM port when the USB-COM interface is used, the scanner requires a
maximum of one second to be ready to receive control commands.
Control Commands
Z
(Note 1)
R
(Note 1)
See Parameter Details,
S
[1] given later.
MA
MP
(Note 3)
ML
(Note 6)
See Parameter Details,
NR
[2] given later.
NZ
CR
CZ
See Parameter Details,
TR
[3] given later.
Parameter Response
None None
None None
OK/NG
None None
None None
None None
OK/NG
None OK/NG
None OK/NG
None OK/NG
OK/NG (Note 2)
Switch to standby
Upon receipt of a Z command, the scanner goes standby.
Ready to scan
Upon receipt of an R command, the scanner becomes
ready to scan.
Allow the specified code type to be read.
(Note 2)
Switch the scanning target to LCD and paper.
Switch the scanning target to paper.
Switch the scanning target to LCD.
Enable transmission of the number of digits.
(Note 2)
Disable transmission of the number of digits.
(Note 2)
Enable transmission of code ID marks.
(Note 2)
Disable transmission of code ID marks.
(Note 2)
Specify the double-read prevention timeout.
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Function