SIMATIC RF200
System Manual, 07/2015, J31069-D0227-U001-A9-7618
25
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.
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 strength of the field decreases 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.
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