Minimum Distances And Maximum Ranges; Configurations Of Antenna And Transponder - Siemens SIMATIC RF600 System Manual

4.4

Minimum distances and maximum ranges

The following section describes the configuration of the antenna and transponder relative to
each other. The aim of the section is to help you achieve the maximum ranges listed here in
a typical electromagnetic environment. One of the main focuses of the section is the effect of
the mounting surface of the transponder on the read/write distance.
As the requirements for achieving the maximum distances specified here, note the following
points:
● Operate the readers with the maximum possible and permitted transmit power.
● With external antennas, the antenna cable with 1 m cable length and 0.5 dB cable loss is
used (6GT2815-0BH10).
● Optimum alignment of the transponder and antenna is ensured (see section
"Configurations of antenna and transponder (Page 55)").
● The optimum mounting surface for the transponder has been selected (see section
"Effects of the materials of the mounting surfaces on the range (Page 58)")
● The maximum range specified in the section "Maximum read/write ranges of
transponders (Page 59)" applies only to read processes.
With write operations, the range is reduced as described in the section.
● Effects that reduce read/write ranges are avoided (see section "Antenna configurations
(Page 39)").
4.4.1

Configurations of antenna and transponder

Below, you will find several possible antenna-transponder configurations that are necessary
to achieve the maximum range. The polarization of the antenna plays a decisive role. The
antennas are distinguished according the following types:
● Linear antennas:
RF615A, RF620A, RF642A
● Circular antennas:
RF640A, RF660A, RF650A
● Antennas that can be switched over (linear/circular):
RF680A
SIMATIC RF600
System Manual, 06/2019, J31069-D0171-U001-A22-7618
RF600 system planning
4.4 Minimum distances and maximum ranges
55