Planning Application; Minimum Mounting Clearances Of Two Antennas Of Different Readers; Antenna/Read Point Configurations - Siemens SIMATIC RF600 System Manual

Readers
5.3 RF630R reader
5.3.2

Planning application

5.3.2.1

Minimum mounting clearances of two antennas of different readers

At 500 mW ERP radiated power, due to the opening angle of the antennas, their fields can
overlap considerably. It is no longer possible to clarify in which antenna field access to the
data of a tag is performed.
In order to avoid this, always keep a minimum distance of 3 m between two antennas of
different RF630R readers with the maximum radiated power of 500 mW ERP.
Dense Reader Mode (DRM)
The readers can also interfere with each other (secondary fields), if the channels (Reader
TX, Transponder TX) overlap. In order to prevent a transponder channel overlapping with a
reader channel, we recommend that the Dense Reader Mode (DRM) is used.
5.3.2.2

Antenna/read point configurations

You can connect up to two external antennas to the RF630R reader. The standard setting is
that two antennas are connected when the reader is started.
You have 3 possibilities for aligning the antennas and covering the read point.
One RF630R reader with two antennas and two read points
If you connect two external antennas to the device and align them in different directions, you
can read tags at two different read points. With this technique, a particular antenna must be
switched off application-dependently to be able to establish which tags have been read from
which antenna. The reader also provides a mode for this purpose in which the antennas can
be switched on and off cyclically (both antennas must be connected). Note the minimum
distances between the antennas for the antenna configuration (see Chapter Specified
minimum and maximum spacing of antennas (Page 47) .
One RF630R reader with two antennas and one read point
If you connect two external antennas to the device and align them in the same direction
(portal configuration), you can read tags at one read point. With this method, the reader
automatically switches between the two antennas while the tags are being read. Note the
minimum distances between the antennas for the antenna configuration (see Chapter
Specified minimum and maximum spacing of antennas (Page 47) .
One RF630R reader with one antenna and one read point
If you connect an external antenna to the device, you can read tags at one read point.
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System Manual, 10/2009, J31069-D0171-U001-A8-7618
SIMATIC RF600