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8-19
Programming
Code 39 Buffering
For a description of Code 39 Buffering, see page 8-8 .
Code 39 buffering cannot be disabled while there is data in the transmission buffer. The
buffer holds 250 bytes of information.
To disable Code 39 buffering, first force the buffer transmission (see Transmit Buffer) or
clear the buffer.
Buffer Data
To buffer data, Code 39 buffering must be enabled, and a symbol must be read with a space
immediately following the start pattern.
•
The scanner gives a hi/lo beep to indicate successful decode and buffering. See
Overfilling Transmission Buffer.
•
The scanner adds the message, excluding the leading space to the transmission
buffer.
•
No transmission occurs.
Clear Transmission Buffer
To clear the transmission buffer, read a symbol which contains only a start character, a
dash (minus), and a stop character.
•
The scanner issues a short hi/lo/hi beep to signal that the transmission buffer has
been erased, and no transmission has occurred.
•
The scanner erases the transmission buffer.
•
No transmission occurs.
CLEAR BUFFER
Содержание LS 1220
Страница 2: ...LS 1220 Product Reference Guide ...
Страница 3: ......
Страница 4: ...LS 1220 Product Reference Guide 70 12072 03 Revision A January 2003 ...
Страница 23: ...1 8 LS 1220 Product Reference Guide Figure 1 3 LS 1220 Connector ...
Страница 33: ...2 10 LS 1220 Product Reference Guide ...
Страница 71: ...8 14 LS 1220 Product Reference Guide Figure 8 1 Hardware Handshaking ...
Страница 97: ...9 6 LS 1220 Product Reference Guide Code Lengths cont d 1 2 3 4 5 6 7 8 9 0 CANCEL ...
Страница 105: ...9 14 LS 1220 Product Reference Guide Prefix Suffix Values cont d 1 2 3 4 5 6 7 8 9 0 CANCEL ...
Страница 108: ...9 17 Parameter Menus UPC Security Zone cont d 1 2 3 4 5 6 7 8 9 0 CANCEL ...
Страница 114: ...9 23 Parameter Menus Parity Set the type of parity for RS 232C transmission ODD EVEN MARK SPACE NONE ...
Страница 118: ...9 27 Parameter Menus ASCII Data Format Select either 7 bit or 8 bit ASCII format for RS 232C communications 7 BIT 8 BIT ...
Страница 120: ...9 29 Parameter Menus Intercharacter Delay cont d 1 2 3 4 5 6 7 8 9 0 CANCEL ...
Страница 133: ......
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