Elatec GmbH
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1. Introduction
The transponder reader module
TWN4 MultiTech M
is a device for reading
and writing RFID transponders. There are different versions of TWN4
devices available, which cover a large range of transponder types both in
the frequency range of 125kHz and 13.56MHz.
2. Getting Started
2.1 Cable Connection
In order to start operating a TWN4 transponder reader, it simply has to be
connected to a host.
2.2 Enumeration
Once the device has been powered up, it is waiting for completion of the
enumeration by the USB host. As long as the device is not enumerated, it is
entering a minimum power consumption mode, where both LEDs are
turned off.
2.3 Initialization
After powering up and enumeration, the device is turning on the built-in
transponder reader logic. The green LED is turned on permanently. Some
transponder readers need some kind of initialization, which is performed in
