System Manual

Table Of Contents
SIMATIC RF200
System Manual, 03/2019, J31069-D0227-U001-A11-7619
27
Planning the RF200 system
4
4.1 Fundamentals of application planning
4.1.1 Selection criteria for SIMATIC RF200 components
Assess your application according to the following criteria, in order to choose the right
SIMATIC RF200 components:
Static or dynamic data transfer
Data volume to be transferred
Speed in case of dynamic transfer
Ambient conditions such as relative humidity, temperature, chemical impacts, etc.
Selection with the help of the TIA Selection Tool
Using the free "TIA Selection Tool (https://w3.siemens.com/mcms/topics/en/simatic/tia-
selection-tool/Seiten/tab.aspx)" configurator, you can easily combine all relevant Ident
products into a complete system. The TIA Selection Tool supports you during product
selection or product configuration and can create a complete order list based on your
information.
4.1.2 Transmission window and read/write distance
The reader generates an inductive alternating field. The field is strongest close to the reader;
however, a read/write distance of "zero" between reader and transponder is not
recommended.
The field strength of the alternating field decreases quickly in proportion to the distance from
the reader. The distribution of the field depends on the structure and geometry of the
antennas in the reader and transponder
A prerequisite for the function of the transponder is a minimum field strength at the
transponder, which is still barely achieved at distance S
g
from the reader.
The picture below shows the transmission window of the SIMATIC RF210R and
SIMATIC RF220R readers between transponder and reader: