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Appendix 2 Control Commands
Control commands refer to commands that are exchanged between the host PC and the scanner via the communications
line.
Some of the control commands that the host PC issues are functionally equivalent to some parameters that can be set with
the QR-coded parameter menu (refer to Chapter 11). Control command settings have priority over settings made with the
QR-coded parameter menu.
Note that turning off the scanner will clear control command settings so that settings made with the QR-coded parameter
menu will take effect unless the PW command is sent to the scanner for saving control command settings into the
EEPROM.
If commands other than ones listed below are sent to the scanner, the scanner operation is not assured.
Transfer Direction
Control Commands
Scanner Host
Function
Z
(Note 1) (Note 2)
READOFF
LOFF
Switch to standby
Upon receipt of the Z, READOFF or LOFF command, the scanner
switches to standby as long as the trigger switch control is set to
Continuous Reading mode 1 or 2.
R
(Note 1) (Note 2)
READON
LON
Ready to scan
Upon receipt of the R, READON or LON command, the scanner
becomes ready to scan as long as the trigger switch control is set to
Continuous Reading mode 1 or 2.
B1
B2
B3
(Note 3)
Sound the beeper
Within 100 ms from the receipt of any of B1, B2 and B3 commands,
the scanner beeps for the period specified below.
B1: Beep for approx. 80 ms
B2: Beep for approx. 120 ms
B3: Beep for approx. 240 ms
Even if the beeping is prohibited or the scanner is on standby, the
beeper will be able to sound.
LB
(Note 3)
Light the blue indicator LED
Within 100 ms from the receipt of the LB command, the blue
indicator LED lights for approx. 500 ms.
LG
(Note 3)
Light the green indicator LED
Within 100 ms from the receipt of the LG command, the green
indicator LED lights for approx. 500 ms.
LR
(Note 3)
Light the red indicator LED
Within 100 ms from the receipt of the LR command, the red indicator
LED lights for approx. 500 ms.
VO
(Note 3)
Drive the vibrator
Within 100 ms from the receipt of the VO command, the vibrator
operates for approx. 180 ms.
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