Siemens SIMATIC Ident System Manual page 25

The figure below shows the transmission window of the SIMATIC RF240R and SIMATIC
RF260R readers between transponder and reader:
S
a
S
g
L
M
Figure 4-2
The transponder can be used as soon as the intersection (SP) of the transponder enters the
area of the transmission window.
SIMATIC RF200
System Manual, 09/2013, J31069-D0227-U001-A8-7618
Operating distance between transponder and reader
Limit distance (maximum clear distance between upper surface of the reader and the
transponder, at which the transmission can still function under normal conditions)
Length of a transmission window
Field centerpoint
RF240R/RF260R transmission window
RF200 system planning
4.1 Fundamentals of application planning
25