Planning the RF200 system
4.1 Fundamentals of application planning
SIMATIC RF200
System Manual, 07/2017, J31069-D0227-U001-A9-7619
29
S
a
Operating distance between transponder and reader
S
g
Limit distance (maximum clear distance between upper surface of the reader and the tran-
sponder, at which the transmission can still function under normal conditions)
L
Length of a transmission window
M
Field centerpoint
Figure 4-2
RF240R/RF260R transmission window
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
.