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Siemens SIMATIC RF300 System Manual Page 31

Rfid-systems simatic sensors.
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Minimum distance from reader to reader
Refer to the field data of the reader for this value.
Minimum distance from transponder to transponder
Refer to the field data of the transponder for this value.
Calculation of the maximum amount of user data in dynamic mode
Step
1.
Calculate dwell time of the
transponder
2.
Calculate maximum user data (n
for reading
3.
Calculate maximum user data (n
for writing
(FRAM area)
Result
A maximum of 13 bytes can be read or written when passing the transponder.
SIMATIC RF300
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618
Formula/calculation
Refer to the "Field data of all transponders and readers" table for value L.
Value V
= 0.14m/s
TPDR
L 0,8
0,038m 0,8 0,217s
t
=
=
v
v
0,14m/s
TPDR
Take value t
from Step 1.
max)
v
Take values K and t
t
K
v
t
Byte
Take value t
from Step 1.
max)
v
Take values K and t
t
K
v
t
Byte
4.1 Fundamentals of application planning
217ms
=
=
from Table "Time constants K and t
Byte
217
ms 15ms
=
13.47
=
15
ms
from Table "Time constants K and t
Byte
ms 15ms
217
13.47
=
=
ms
15
RF300 system planning
".
Byte
⇒ n
13
byte
=
max.
".
Byte
n
13
byte
=
max.
4-11

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