Mode Of Operation; Operating Mode; Power Up; Enumeration - Elatec TWN4 MultiTech Nano Series User Manual

4 MODE OF OPERATION

The mode of operation described in the following chapter is based on a standard ELATEC RFID reader
module equipped with two LEDs. Depending on your product (number of LEDs, installed firmware,
etc.) and in case the product settings have been modified with the ELATEC AppBlaster tool, the
information below might differ from your product configuration when in operation. In particular, the
color and sequence of the LEDs on your product might be different.
4.1

OPERATING MODE

To start operating the reader module, it simply has to be connected directly to a host device.
4.2

POWER UP

Once the reader module is connected to the host device, it detects the type of communication cable
(e.g. USB), with which it is connected to the host.
In case of an external power supply unit is used, the following requirements must be satisfied:
•
ES1/PS2 classified power source according to IEC 62368-1
•
Short-circuit current < 8 A
4.3

ENUMERATION

Only applicable for USB version of reader modules:
Once the reader module has been powered up, it waits for completion of the enumeration by the USB
host. As long as the reader module is not enumerated, it is in a minimum power consumption mode,
where both LEDs are turned off.
4.4

INITIALIZATION

After powering up and enumeration (USB mode), the reader module turns on the built-in transponder
reader logic. The green LED is turned on permanently. Some RFID modules need some kind of
initialization, which is performed in this step. After successful initialization, the reader module sounds
a short sequence, which consists of a lower tone followed by a higher tone.
4.5

NORMAL OPERATION

As soon as the reader module has completed the initialization, it enters the normal operation mode.
During normal operation, the reader module searches for a transponder continuously.
4.6

DETECTION OF A TRANSPONDER

If a transponder is detected by the reader module, the following actions are performed:
•
Send the ID to the host. By default, the USB devices send by emulating keystrokes of a keyboard.
•
Sound a beep.
•
Turn off the green LED.
•
Blink the red LED for two seconds.
•
Turn on the green LED.
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