Barcode reader VB34
Software configuration
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Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
Fuchs Group • Tel.: G49 621 776-0 • USA +1 330 4253555 • Sin65 67799091 • Internet http://www.pepperl-fuchs.com
Online operating mode
Figure 7.4
Selecting the online operating mode
This operating mode instructs the reader to evaluate the external presence sensor at
the input EXT TRIG+ and EXT TRIG.
If the presence sensor is active, the VB34 reader attempts to enter and decode the
code.
If the decoding cycle is completed successfully, the barcode data is transmitted via
the serial interface. Otherwise, a message stating that no data was read is
transmitted.
Automatic operating mode
Figure 7.5
Selecting the automatic mode
No connection to an external presence sensor is required for this operating mode. In
this operating mode, the reader scans automatically and activates the read cycle
when a barcode enters the read zone of the reader. The reader stops after an
adjustable number of empty scans.
The barcode data is transmitted via the serial Interface. If a read cycle is completed
without a result, no message is transmitted to the computer.