Denso BHT-200QW Especificaciones Pagina 128

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8.3.2 Programming for Bar Code Device
Code Mark
Code MarkCode Mark
Code Mark
The MARK$ function allows you to check the code mark (denoting the code type) and the
length of the inputted bar code data.
This function returns a total of three bytes: one byte for the code mark and two bytes for the
data length.
Multiple Code Reading
Multiple Code ReadingMultiple Code Reading
Multiple Code Reading
You may activate the multiple code reading feature which reads more than one code type
while automatically identifying them. To do it, you should designate desired code types
following the CODE in the OPEN "BAR:" statement.
Read Mode of the Trigger Switch
Read Mode of the Trigger SwitchRead Mode of the Trigger Switch
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.
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"...
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
Generating aGenerating a
Generating a Check Digit of Bar Code Data
Check Digit of Bar Code Data Check Digit of Bar Code Data
Check Digit of Bar Code Data
Specifying a check digit in the OPEN "BAR:" statement makes the Interpreter automatically
check bar codes. If necessary, you may use the CHKDGT$ function for generating a check
digit of bar code data.
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