Reading Range On Flat Metallic Carrier Plates - Siemens SIMATIC RF600 System Manual

Transponder/tags
7.3 SIMATIC RF620T
7.3.3.4

Reading range on flat metallic carrier plates

The transponder generally has linear polarization. The polarization axis runs as shown in the
diagram below. If the tag is centrically mounted on a flat metal plate, which may either be
almost square or circular, it can be aligned in any direction since the transmitting and
receiving RF660A antennas operate with circular polarization.
Figure 7-13
Table 7- 10
Carrier plate material
Metal plate at least 300 x 300 mm
Metal plate 150 x 150 mm
Table 7- 11
Carrier plate material
Metal plate at least 300 x 300 mm
Metal plate 150 x 150 mm
The use of spacers on metallic surfaces is therefore recommended.
On rectangular carrier plates, the reading distance depends on the mounting orientation of
the transponder A 90° rotation of the transponder about the axis of symmetry may result in
greater reading distances
194
Optimum positioning of the transponder on a (square or circular) metal carrier plate
Reading range with metallic, plane carriers without spacer
Reading range with metallic, plane carriers with spacer
Reading range Europe
typ. 2 m
typ. 1.5 m
Reading range Europe
typ. 4 m
typ. 2 m
System Manual, 10/2009, J31069-D0171-U001-A8-7618
Reading range USA
typ. 1.5 m
typ. 1 m
Reading range USA
typ. 6 m
typ. 4.5 m
SIMATIC RF600