User's Manual

Hermos Technical Reports
Release 2.1 Page 3 of 22
1 System Description
The HERMOS transponder reader system is used in the semiconductor industry for
the identification of the wafer-carrier. It is a high frequency identification system
using the FM-transmission.
The basic item is a transponder working as a forgery-proof electronic identity disc.
The reader of the system sends an energy impulse via the antenna. The capacitor
of the passive, battery-less transponder is charged by this impulse. After that, the
transponder returns a signal with the stored data.
The total reading cycle takes less than 100 ms.
As a sight-connection between transponder and reader is not absolutely necessary,
the transponder can also be identified through non-metallic material.
The HERMOS transponder reading unit is a LON-node. LON is a control network
for distributed systems and has been developed by the US company Echelon. The
LONWORKS-technology corresponds to the SEMI (Semiconductor Equipment
Materials International)-Standard (E54.6).
The data received by the transponder reader are transmitted to equipment,
terminalserver or host systems by the LON-network.