Siemens SIMATIC RF300 System Manual page 45

Secondary fields without shielding
The following graphic shows typical primary and secondary fields, if no shielding measures are
taken.
①
②
Figure 4-4
In this arrangement, the reader can also read tags via the secondary field. Shielding is required
in order to prevent unwanted reading via the secondary field, as shown and described in the
following.
Secondary fields with shielding
The following graphic shows typical primary and secondary fields, with metal shielding this
time.
The metal shielding prevents the reader from detecting tags via the secondary field.
SIMATIC RF300
System Manual, 02/2021, C79000-G8976-C345-09
2
Main field
Secondary field
Secondary field without shielding
Planning the RF300 system
4.1 Fundamentals of application planning
2
1
2
45