User's Manual
Table Of Contents
- SIMATIC RF300
- Legal information
- Table of contents
- 1 Introduction
- 2 Safety information
- 3 System overview
- 4 Planning the RF300 system
- 4.1 Fundamentals of application planning
- 4.1.1 Selection criteria for SIMATIC RF300 components
- 4.1.2 Transmission window and read/write distance
- 4.1.3 Width of the transmission window
- 4.1.4 Impact of secondary fields
- 4.1.5 Setup help of the readers of the second generation
- 4.1.6 Permissible directions of motion of the transponder
- 4.1.7 Operation in static and dynamic mode
- 4.1.8 Dwell time of the transponder
- 4.1.9 Communication between communications module, reader and transponder
- 4.2 Field data for transponders, readers and antennas
- 4.3 Installation guidelines
- 4.4 Chemical resistance of the transponders
- 4.5 Guidelines for electromagnetic compatibility (EMC)
- 4.1 Fundamentals of application planning
Planning the RF300 system
4.5 Guidelines for electromagnetic compatibility (EMC)
SIMATIC RF300
104 System Manual, 07/2016, C79000-G8976-C345-0x
What interference can affect RFID?
Interference source
Cause
Remedy
Switched-mode power supply Interference emitted from the
current infeed
Replace the power supply
Interference injected through
the cables connected in
series
Cable is inadequately shield-
ed
Better cable shielding
The reader is not connected
to ground.
Ground the reader
HF interference over the
antennas
caused by another reader
• Position the antennas further
apart.
• Erect suitable damping materials
between the antennas.
• Reduce the power of the readers.
Please follow the instructions in the
section
Installation guidelines/reducing
the effects of metal
Coupling paths
A coupling path has to be present before the disturbance emitted by the interference source
can affect the system. There are four ways in which interference can be coupled in:
Figure 4-12 Ways in which interference can be coupled in