Download  Print this page

Dwell Time Of The Transponder - Siemens SIMATIC RF300 System Manual

Simatic sensors.
Hide thumbs

Advertisement

RF300 system planning
4.1 Fundamentals of application planning
Operation in dynamic mode
When working in dynamic mode, the transponder moves past the reader. The transponder
can be used as soon as the intersection (SP) of the transponder enters the circle of the
transmission window. In dynamic mode, the operating distance (S
[Operating distances, see Chapter Field data for transponders, readers and antennas
(Page 41)]
Figure 4-5
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
Tag
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:
36
Operation in dynamic mode
0,8 [ ]
L
m
v
[ / ]
m s
Tag
Dwell time of the transponder
Length of the transmission window
:
Speed of the transponder (tag) in dynamic mode
Constant factor used to compensate for temperature impacts and production
tolerances
System Manual, 11/2009 - Zwischenstand 17.09.2009, A5E01642529-04
) is of primary importance.
a
SIMATIC RF300

Advertisement

Comments to this Manuals

Symbols: 0
Latest comments: