Symbologies 12 - 31
Code 39 Buffering (Scan & Store)
This feature allows th e sca nn e r to ac cum ulate data from multiple Code 39 symbols.
Selecting the Scan and Store option (Buffer Code 39) temporarily buffers all Code 39 symbols having a leading
space as a first character for later transmission. The leading space is not buffered.
Decode of a valid Code 39 symbol with no leading sp ace caus es transmission in sequence of all b uf fered dat a in a
first-in first-out format, plus transmission of the “triggering” symbol. See the following pages for further details.
When the Do Not Buffer Code 39 option is selected, all decoded Code 39 symbols are transmitted immediately
without being stored in the buffer.
This feature affects Code 39 only. If selecting Buffer Code 39, we recommend configuring the 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 buf f er hold s
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 p age 12-32) 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 dat a overflo ws the tra nsmission buffer, the scanner issues a lo w/high bee p to indi cate successfu l
decode and buffering. (F or ove rflo w co nd itio ns , see Overfilling Transmiss ion Buffer.)
•
The scanner adds the decoded data excluding the leading space to the transmission buffer.
•
No transmission occurs.
Buffer Code 39
(Enable)
*Do Not Buffer Code 39
(Disable)