Siemens SIMATIC RF300, Системное руководство

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4.3.3 Effects of metal on different transponders and readers
Mounting different transponders and readers on metal or flush-mounting
Certain conditions have to be observed when mounting the transponders and readers on metal
or flush-mounting. For more information, please refer to the descriptions of the individual
transponders and readers in the relevant section.
4.3.4 Impact on the transmission window by metal
In general, the following points should be considered when mounting RFID components:
• Direct mounting on metal is allowed only in the case of specially approved transponders.
• Flush-mounting of the components in metal reduces the field data; a test is recommended
in critical applications.
• When working inside the transmission window, make sure that no metal rail (or similar part)
intersects the transmission field.
The metal rail would affect the field data.
• With readers with a large antenna surface, for reasons of communication reliability, when
the transponders are flush-mounted in metal, a metal-free space around the transponders is
recommended. This metal-free space should match the size of the antenna surface.
• The reduction of field data is also based on the minimum distance between the reader and
transponder. The respective recommendations are listed in the following table.
The impact of metal on the field data (S
g
, S
a
, L) is shown in a table in this section. The values in
the tables describe field data reduction and show the reduced range as a percentage. The range
relates to use in a non-metallic environment. A value of 100% means no influence on the range.
Note
Possible reader-transponder combinations
The tables of the following section show the possible reader-transponder combinations.
Planning the RF300 system
4.3 Installation guidelines
SIMATIC RF300
System Manual, 02/2021, C79000-G8976-C345-09
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