Denso GT10B-SB Bedienungsanleitung PDF herunterladen (Seite 30)

5.2 Software Control

You can control the scanner by sending scanning control commands from the host computer, 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.

(: Command valid)

Trigger switch operating modes

Commands Description

Auto-off

mode 1

Auto-off

mode 2

Momentary

switching

mode 1

Momentary

switching

mode 2

Continuous

reading mode

READON,

LON

 --  -- 

Ready-to-scan commands

Upon receipt of one of these commands,

the scanner turns on the illumination

LED and becomes ready to scan.

-- -- -- -- 

READOFF,

LOFF

Standby commands

Upon receipt of one of these commands,

the scanner turns off the illumination

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

Read

-to-scan command

Bar code data

Command input (RxD)

Bar code

Illumination LED

Data output (TxD)

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 143 144

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