Keyence BL-N90 Series Bedienungsanleitung Seite 43

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3-1 Reading
3-3
3
Descriptions of Key Functions
Functions when Reading the Barcode
z Rereading prevention
The "rereading prevention function" ensures that an emitted laser does not accidentally
read the same barcode twice in a row.
If a single barcode is read multiple times within the specified rereading prevention time,
then the subsequent readings are ignored.
Factory setting: 375 ms
Time can be set to 250 ms or greater in 125 ms units ( page 4-17).
After a barcode had been read correctly, to read the same barcode again, either turn off
the laser light temporarily or move the barcode away from the reading window for about
one second to clear the reread prevention time.
z Limit read digits
This function limits the number of digits read when reading a barcode. Digits in the
barcode that exceed the limit are invalidated.
There are two types of settings ( page 4-18).
Limit all : All types of registered codes are limited.
Limit individual : An individual type of code is limited.
z Buzzer tone selection
The buzzer that signals various operations can be muted or set to seven different tones
( page 4-15).
Note
The buzzer used while configuring the settings cannot be changed.
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