INSTALLATION
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2
The RTSAUX and CTSAUX signals control data transmission and synchronize the
connected devices. If the RTS/CTS handshaking protocol is enabled, the DS2400
activates the RTSAUX output to indicate a message is to be transmitted. The
receiving unit activates the CTSAUX input to enable the transmission.
Code Verifier
If the DS2400 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.
2.4.4 Inputs
The inputs available on the connector supplied with the scanner are the pins relative
to the External Trigger, as indicated below:
Pin Name Function
18 EXT TRIG+ external trigger +
19 EXT TRIG- external trigger -
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 WinHost Help On Line.
The yellow LED (Figure A, 2) is on when the External Trigger forces a current flow
through the EXT TRIG+ and EXT TRIG- pins.
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