Software Control - Denso GT10B-SU User Manual

6.2 Software Control

You can control the scanner by sending scanning control commands from the host computer via the USB-COM interface,
instead of pressing the trigger switch.
Scanning control commands include R, READON, LON, RC, Z, READOFF and LOFF and they are restricted by the
trigger switch operating mode, as listed below. In momentary switching mode 1, for example, the RC command is invalid.
In auto-off mode 2 and momentary switching mode 2, all of these commands are invalid.
Commands
R,
Ready-to-scan commands
READON,
Upon receipt of one of these commands,
LON
the scanner turns on the illumination LED
and becomes ready to scan.
RC
Standby commands
Z,
Upon receipt of one of these commands,
READOFF,
the scanner turns off the illumination
LOFF
LED and switches to standby.
Each of these commands should be enclosed with a header and terminator for transmission according to the
communications conditions of the scanner.
Note: When the scanner is ready to scan with an R, READON or LON command, pressing the trigger switch cancels
the command control, producing the operation specified for the trigger switch.
Notification of a scanning failure
If the scanner fails to read a bar code and switches to standby in auto-off mode 1 or momentary switching mode 1, it can
send the following two types of notification data (cancel or error) to the host computer.
- CAN (18h)
- ERROR (with header and terminator)
Control scheme
(1) Auto-off mode 1 or momentary switching mode 1
Successful read
Command input (RxD)
Bar code
Illumination LEDs
Data output (TxD)
Description
Ready-to-scan command
Trigger switch operating modes
Momentary
Auto-off Auto-off
mode 1 mode 2
√
--
-- --
-- --
24
(√: Command valid)
Momentary
switching switching
mode 1 mode 2
√
--
-- --
√
--
Bar code data
Continuous
reading mode
√
√
√