Elatec TWN4F7 User Manual

Device for reading and writing

RFID transponders

TWN4 MultiTech 2 LF

Manual

Rev. 4

Elatec GmbH

Page 2 of 8

1. Introduction

The TWN4 MultiTech 2 LF is an integrated device for contactless read/write
operations on a transponder, i.e. a transponder card.

2. Getting Started

2.1 Cable Connection

In order to start operating a device for reading and writing
RFID transponders, the TWN4 MultiTech 2 LF simply has to be connected
to a host.

2.2 Power Up

Once a TWN4 MultiTech 2 LF reader is connected to the host, it detects the
type of communications cable (USB or RS232), with which it is connected to
the host.

Additionally, the RS232 is sending a version string via RS232 to the host.

2.3 Enumeration (USB Only)

This is only applicable for the USB version: 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.

Elatec GmbH

Page 3 of 8

2.4 Initialization

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

2.5 Normal Operation

As soon as the device has completed the initialization, it is entering normal
operation. During normal operation the device is searching for a
transponder continuously.

Notice:
For secure use a minimum distance of 2 cm to the reader is recommended.

注意!
依據低功率電波輻射性電機管理辦法
第十二條經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用者均
不得擅自變更頻率、加大功率或變更原設計之特性及功能。
第十四條低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現有干
擾現象時，應立即停用，並改善至無干擾時方得繼續使用。前項合法通信，指依
電信規定作業之無線電信。低功率射頻電機須忍受合法通信或工業、科學及醫療
用電波輻射性電機設備之干擾。