Static/Dynamic Mode; Operation Of Several Readers Within Restricted Space; Dense Reader Mode - Siemens Simatic RF600 System Manual

4.3.7

Static/dynamic mode

Reading or writing can be either static or dynamic.
● Reading/writing is counted as being static if the tag does not move in front of the antenna
and is read or written.
● Reading/writing is counted as being dynamic if the tag moves past the antenna during
reading/writing.
The following overview shows which environments are suitable for which read or write mode:
Operating mode
Static
Dynamic
4.3.8

Operation of several readers within restricted space

4.3.8.1

Dense Reader Mode

A special operating mode according to the standard EPC Global Class 1, Gen 2 in Dense
Reader Mode allows several RF600 readers to be operated without interference in close
proximity to each other. All RF600 readers operate in Dense Reader Mode according the
standard EPC Global Class 1, Gen 2.
Dense Reader Mode allows physically adjacent readers to use the same frequency when
Gen 2 transponders are being used.
Special features for ETSI
In accordance with EPC Global as well as ETSI EN 302 208 V1.4.1, the four transmit
channels are used for transmission with the RF670R, with the RF640R as of firmware
version V1.3, and with the RF620R/RF630R and with the RF650R/RF680R/RF685R (see
section Regulations applicable to frequency bands (Page 75)) and the transponder response
appears on the associated neighboring channels. As a result of the large difference in level
between the transmitter channels and the transponder response channels, this technology
provides great advantages for frequency reuse. However, a prerequisite is that a certain
minimum distance, and thus minimum decoupling, is observed between the antennas of
adjacent readers.
SIMATIC RF600
System Manual, xx/2014, J31069-D0171-U001-A15-7618
Read
Recommended in normal UHF
environments
Recommended under difficult
UHF conditions
RF600 system planning
4.3 Antenna configurations
Write
Recommended in normal UHF
environments
Not recommended in difficult
UHF environments
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