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
4.1 Fundamentals of application planning
SIMATIC RF300
40 System Manual, 07/2016, C79000-G8976-C345-0x
The transponder can be used as soon as the intersection (SP) of the transponder enters the
area of the transmission window.
From the diagrams above, it can also be seen that operation is possible within the area
between S
a
and S
g
. The active operating area reduces as the distance increases, and
shrinks to a single point at distance S
g
. Only static mode should thus be used in the area
between S
a
and S
g
.
Aids for calculating the field data
Note
Determining the operating distance, limit distance and transmission window
Remember that you can obtain the values S
a
, S
g
and L simply and quickly using the tool for
field data acquisition. You will find this on the DVD "Ident Systems, Software &
Documentation".
4.1.3
Width of the transmission window
Determining the width of the transmission window
The following approximation formula can be used for practical applications:
B:
Width of the transmission window
L:
Length of the transmission window
Tracking tolerances
The width of the transmission window (B) is particularly important for the mechanical tracking
tolerance. The formula for the dwell time is valid without restriction when B is observed.