8 - 34 LI2208 PRODUCT REFERENCE GUIDE
Code 39 Buffering - Scan & Store (continued)
This feature affects Code 39 only. If selecting Buffer Code 39, we recommend configuring the linear imager to
decode Code 39 symbology only.
While there is data in the transmission buffer, you cannot select Do Not Buffer Code 39. The buffer holds
200 bytes of information.
To disable Code 39 buffering when there is data in the transmission buffer, first force the buffer transmission
(see Transmit Buffer on page 8-35) or clear the buffer.
Buffer Data
To buffer data, enable Code 39 buffering and scan a Code 39 symbol with a space immediately following the
start pattern.
•
Unless the data overflows the transmission buffer, the linear imager issues a low/high beep to indicate
successful decode and buffering. (For overflow conditions, see Overfilling Transmission Buffer on page
8-35.)
•
The linear imager adds the decoded data excluding the leading space to the transmission buffer.
•
No transmission occurs.
Clear Transmission Buffer
To clear the transmission buffer, scan the Clear Buffer bar code below, which contains only a start character, a
dash (minus), and a stop character.
•
The linear imager issues a short high/low/high beep.
•
The linear imager erases the transmission buffer.
•
No transmission occurs.
Buffer Code 39 (Enable)
(01h)
*Do Not Buffer Code 39 (Disable)
(00h)
Clear Buffer
NOTE The Clear Buffer contains only the dash (minus) character. In order to scan this command, set Code 39
lengths to include length 1.
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