Reference Guide

4 - 38 Barcode Scanner Configuration Guide
Code 39 Buffering - Scan & Store
SSI # 71h
Parameter # 113
This feature allows the barcode scanner to accumulate 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.
Decoding a Code 39 symbol with no leading space transmits in sequence all buffered data in a first-in first-out
format, plus the “triggering” symbol. See the following pages for further details.
Select Do Not Buffer Code 39 to transmit all decoded Code 39 symbols immediately without storing them in
the buffer.
This feature affects Code 39 only. If selecting Buffer Code 39, we recommend configuring the barcode
scanner to decode Code 39 symbology only.
Buffer Code 39 (Enable)
(01h)
*Do Not Buffer Code 39 (Disable)
(00h)
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 4-39) 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 barcode scanner issues a low/high beep to
indicate successful decode and buffering. (For overflow conditions, see Overfilling Transmission Buffer
on page 4-39.)
• The barcode 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 barcode scanner issues a short high/low/high beep.
• The barcode scanner erases the transmission buffer.
• No transmission occurs.