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Symbologies 13 - 25
Code 39 Buffering - Scan & Store (continued)
This feature affects Code 39 only. If selecting Buffer Code 39, we recommend configuring the digital scanner
to decode Code 39 symbology only.
While there is data in the transmission buffer, selecting Do Not Buffer Code 39 is not allowed. 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 13-26) or clear the buffer.
Buffer Data
To buffer data, Code 39 buffering must be enabled and a Code 39 symbol must be read with a space
immediately following the start pattern.
•
Unless the data overflows the transmission buffer, the digital scanner issues a low/high beep to indicate
successful decode and buffering. (For overflow conditions, see Overfilling Transmission Buffer on page
13-26.)
•
The digital scanner 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 digital scanner issues a short high/low/high beep.
•
The digital scanner 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,
be sure Code 39 length is set to include length 1.