Siemens SIMATIC RF600 Series System Manual page 382

Transponder
7.14 SIMATIC RF680T
7.14.3.2 Range when mounted on flat metallic carrier plates
The transponder generally has linear polarization. The polarization axis runs as shown in the
diagram below. If the transponder is centrally mounted on a plane metal plate, which may
either be almost square or circular, it can be aligned in any direction if the transmitting and
receiving antennas operate with circular polarization (such as the RF660A).
Figure 7-36
Table 7- 52
Carrier material
Metal plate 150 x 150 mm
Metal plate 300 x 300 mm
On rectangular carrier plates, the range depends on the mounting orientation of the
transponder A 90° rotation of the transponder about the axis of symmetry may result in
greater ranges.
You will find further information on the range in the section "Minimum distances and
maximum ranges (Page 293)".
382
Optimum positioning of the transponder on a (square or circular) metal surface
Range on flat metallic carriers
Range Europe
typically 50 %
typically 100 %
System Manual, 10/2016, J31069-D0171-U001-A19-7618
Range USA
typically 50 %
typically 100 %
SIMATIC RF600