
Barcode Scanner VB14A
INSTALLATION
Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
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Code Verifier
If the VB14A is used as a Code Verifier, it is possible to indicate to the scanner what
code to store as the verifier code by means of an external hardware input.
The Code Verifier parameter must be enabled and the configuration parameters to
allow correct Code Type reading must be saved to the scanner in order to read the
verifier code.
To activate the input, connect together pins 23 and 24 (CTSAUX and RTSAUX) of the
25-pin connector (for example with a push-button), before the active edge of the
External Trigger input (or before the code passes under the laser beam for the
Automatic operating mode.
The next read code will be stored as the verifier code in the scanner's RAM and NON-
VOLATILE (EEPROM) memory by default.
Then the two pins must be disconnected.
Since it uses part of the RS232 auxiliary serial interface, this interface is limited when
using this option and the Handshake selection must not be set to RTS/CTS.
6.2.4
Inputs
The inputs available on the connector supplied with the scanner are the pins relative
to the External Trigger, as indicated below:
The External Trigger input is used in the On-Line operating Mode and tells the
scanner to scan for a code. The active state of this input is selected in software. Refer
to the VisoSetup Help On Line.
The yellow LED (figure 3.1 (2)) is on when the External Trigger forces a current flow
through the EXT TRIG+ and EXT TRIG- pins.
This input is optocoupled and can be driven by both an NPN or PNP type command.
The connections are indicated in the following diagrams:
Figure 6.12
Input NPN command using external power
Connector
Name
Function
25-Pin
18
EXT TRIG+
external t
19
EXT TRIG-
external trigger -
30 V DC max.
EXTERNAL
TRIGGER
Signal
18
19
+5 V
Vext
V
EXT TRIG+
EXT TRIG-
VB14A 25-pin