138
■
Read Mode of the Trigger Switch
The trigger switch function is assigned to the magic keys M3 and M4 by default. You may
assign the trigger switch function to other keys by using the
KEY
statement.
You may select the read mode of the trigger switch by using the
OPEN
"BAR:"
statement
as listed below.
To check whether the trigger switch is pressed or not, use the
INP
function or the
WAIT
statement, as shown below.
trig% = INP(0) AND &h04
If the value of the
trig%
is 04h, the trigger switch is kept pressed; if 00h, it is released.
■
Generating a Check Digit of Bar Code Data
Specifying a check digit in the
OPEN
"BAR:"
statement makes the Interpreter automati-
cally check bar codes. If necessary, you may use the
CHKDGT$
function for generating a
check digit of bar code data.
■
Controlling the Indicator LED and Beeper (Vibrator) for of Successful
Reading
By using the
OPEN
"BAR:"
statement, you can control:
• whether the indicator LED should light in green or not (Default: Light in green)
• whether the beeper should beep or not (Default: No beep)
(The BHT-100 may control the vibrator also.)
when a bar code is read successfully. For detailed specification of the
statement, refer to Chapter 14.
Controlling the indicator LED
If you have activated the indicator LED (in green) in the
OPEN
"BAR:"
statement, the
OUT
statement cannot control the LED via output port 1 when the bar code device file is
opened. (For details about settings of bits 0 and 1 on output port 1, refer to Appendix D.)
If you have deactivated the indicator LED in the
OPEN
"BAR:"
statement, the
OUT
state-
ment can control the LED via output port 1 even when the bar code device file is opened.
(For details about settings of bits 0 and 1 on output port 1, refer to Appendix D.)
Read Mode
OPEN
"
BAR:
"
Statement
Auto-off Mode (Default)
Momentary Switching Mode
Alternate Switching Mode
Continuous Reading Mode
OPEN
"BAR:F"
...
OPEN
"BAR:M"
...
OPEN
"BAR:A"
...
OPEN
"BAR:C"
...
Summary of Contents for BHT-BASIC 100 SERIES
Page 1: ......
Page 161: ...153 Chapter 10 Sleep Function CONTENTS 10 1 Sleep Function 154...
Page 163: ...155 Chapter 11 Resume Function CONTENTS 11 1 Resume Function 156...
Page 173: ...165 Chapter 13 Backlight Function CONTENTS 13 1 Backlight Function 166...
Page 249: ...241 Example CLOSE IF kyIn Y THEN KILL Master Dat END IF Reference Statements CLFILE...
