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4.1.2
Transmission window and read/write distance
The reader generates an inductive alternating field - also referred to as an antenna field. The
antenna field is strongest close to the reader, whereby a read/write distance of "zero" between
reader and transponder is not recommended.
The field strength of the alternating field decreases strongly the further away from the reader.
The distribution of the antenna field depends on the structure and geometry of the antennas in
the reader and transponder.
For the transponder to function correctly, a minimum field strength at the transponder must be
achieved at a distance S
g
from the reader or the antenna.
The figures below show the transmission window between transponder and reader or between
transponder and antenna:
Planning the RF300 system
4.1 Fundamentals of application planning
SIMATIC RF300
40
System Manual, 02/2021, C79000-G8976-C345-09
Содержание SIMATIC RF300
Страница 14: ...Table of contents SIMATIC RF300 14 System Manual 02 2021 C79000 G8976 C345 09 ...
Страница 18: ...Introduction 1 1 Preface SIMATIC RF300 18 System Manual 02 2021 C79000 G8976 C345 09 ...
Страница 22: ...Safety information 2 1 Security information SIMATIC RF300 22 System Manual 02 2021 C79000 G8976 C345 09 ...
Страница 208: ...Readers 5 6 SIMATIC RF382R with Scanmode 1st generation SIMATIC RF300 208 System Manual 02 2021 C79000 G8976 C345 09 ...
Страница 258: ...Antennas 6 10 ANT 30 stainless steel variant SIMATIC RF300 258 System Manual 02 2021 C79000 G8976 C345 09 ...
Страница 474: ...Service Support SIMATIC RF300 474 System Manual 02 2021 C79000 G8976 C345 09 ...