Siemens SIMATIC RF600 Series System Manual page 368

Transponder
7.13 SIMATIC RF640T Gen 2
7.13.3.2 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 tag is mounted in the center of a flat metal plate, which is either
approximately square or circular, it can be aligned in any direction since the transmitting and
receiving RF660A antennas operate with circular polarization.
Figure 7-31
Table 7- 46
Carrier material
Metal plate of at least Ø 150 mm
Metal plate Ø 120 mm
Metal plate Ø 85 mm
Metal plate Ø 65 mm
On rectangular carrier plates, the range depends on the mounting orientation of the
transponder
You will find more detailed information on the range in the section "Minimum distances and
maximum ranges (Page 293)".
368
Optimum positioning of the transponder on a (square or circular) metal surface
Range on flat metallic carriers
Range
100 %
approx. 80%
approx. 55%
approx. 40%
System Manual, 10/2016, J31069-D0171-U001-A19-7618
SIMATIC RF600