Dwell Time Of The Transponder - Siemens SIMATIC RF300 System Manual

RF300 system planning
4.1 Fundamentals of application planning
4.1.7

Dwell time of the transponder

The dwell time is the time in which the transponder remains within the transmission window
of a reader. The reader can exchange data with the transponder during this time.
The dwell time is calculated thus:
t
=
v
t :
V
L:
v
TPDR
0,8:
The dwell time can be of any duration in static mode. The dwell time must be sufficiently long
to allow communication with the transponder.
The dwell time is defined by the system environment in dynamic mode. The volume of data
to be transferred must be matched to the dwell time or vice versa.
In general:
t
v
t :
V:
t :
K
4-8
L 0,8[ ] m
⋅
v [ / ] m s
TPDR
Dwell time of the transponder
Length of the transmission window
: Speed of the transponder (TPDR) in dynamic mode
Constant factor used to compensate for temperature impacts and production
tolerances
t ≥
K
Dwell time of the data memory within the field of the reader
Communication time between transponder and communication module
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618
SIMATIC RF300