Opticon L-46X - Barcode Read Modes

Chapter-8
Read Options
L-46X User's Manual
98
1st
Read Modes
8.1
Code reading starts when the trigger signal (TRIGn) is pulled low, when the trigger command (“Z”) is
received or when an object is detected while in auto trigger mode.
Read Modes 8.1.1
Read modes includes “single read” and “multiple read” modes.
Item
Command
Description
Default
Single Read
S0
Single read in a single trigger

Multiple Read 1
[D3P
Multiple read in a single trigger, the scanner saves the
read data in memory to not read the same data.
Multiple Read 2
S1
Multiple read in a single trigger, the scanner read the
same data.
● Single Read
The scanner starts reading after a trigger until a barcode is successfully decoded or until the read
time expires. (See 8.1.2)
● Multiple Read 1 (Do not read the same data)
The scanner starts reading after a trigger and stays reading even after a barcode is successfully
decoded, until the read time expires. To prevent that a barcode is read twice, the scanner saves the
read barcodes in memory and checks if it has been read before. The list in memory is 20 barcodes
long so after 20 different barcodes, the same barcode can be read again.
If there is more than one code within the read area, as in the following figure, this read mode is
helpful to prevent reading the same code twice.
Example: Read multiple codes continuously with a single trigger.
● Multiple Read 2 (Permit same data reading)
The scanner starts reading after a trigger and stays reading even after a barcode is successfully
decoded until the read time expires. The same barcode cannot be read twice unless another
barcode is read in between or when at least “Double read reset time” has past.
Example: Read multiple codes sequentially with single trigger.