User Manual

5. Functional Description
The RF reader Leser 2plus with serial RS232 interface is a reader, which can be used both as a stand-alone
reader or as a reading head just sending the decoded transponder numbers to the PC.
Up to 50 transponder numbers can be stored in an on board EEPROM. The reader switches an output, if the
decoded transponder is stored in the memory of the reader. The “ON”-time of the output can be set from app.
0,5 sec to 15 sec in steps of 1 sec.
It is recommended to use the PC software “LeserPlus Manager” (download from
www.codatex.com) to store
the transponder numbers (key transponders) in the memory.
Alternatively a master transponder can be used to store the key transponders into the memory. The master
transponder must be stored separately in the memory.
In the stand-alone mode the reader decides on its own, which transponder is permitted to switch the output.
Through the serial interface and the PC software “LeserPlus Manager” the table of permitted transponders can
be comfortably managed: uploaded, modified and downloaded to the reader. Also the switch time of the
output can be changed easily.
If you configure the reader as reading head (in the PC software LeserPlus Manager), the reader does not
switch outputs on its own, but just sends the number to the serial interface and waits for instructions from the
PC.
ATTENTION: If the reader is in reading head mode, the reader does not switch the output on its
own, even if there are transponders stored in the memory. In this mode the reader waits for
instructions from the PC. The reading head mode can be deactivated through PC software only.
A more detailed description of the reader is available in item Operation.
6. Connections
The exact terminal positions can be seen in the table in Section 4. Device Description above.
It is recommended to use the power module POW as power supply to the Leser 2plus. The connection pins 1
to 6 and 7 and 8 are layouted in a 2,54mm grid, so that pin connectors can be used for soldering both bcb to
a sandwich assembly. In case of using the power module POW please refer to the user guide of the POW for
detailed description of the connectors on the POW module. All pins are available on the POW.
If an external power supply is used:
- make sure that it provides a stabilized 5V source with a low ripple (<50mV).
- connect the antenna module to the pins 7 and 8 of the Leser 2plus.
- alternatively you can use a 3,5mm screw terminal on pin 8 and 9 for the antenna connection
- connect the power supply (5V, GND) to the pins 1 and 6 of the Leser 2plus.
7. Putting into Operation
After the Leser 2plus and the Antenna have been connected in accordance with the connection scheme the
Leser 2plus can be put into operation.
If you are using the PC software, please connect the serial interface of the reader with the corresponding pins
of the RS232 interface of your PC.
After activating the power supply the Reader is in permanent Reading Mode.
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