Siemens SIMATIC RF600 Series System Manual page 293

7.1.5 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 write/read 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 6GT2815-0BH30 with a length of 3 m and 1
dB cable loss is used.
● The alignment of the transponder and antenna needs to be optimum (see section
"Configurations of antenna and transponder (Page 293)").
● The optimum mounting surface for the transponder has been selected (see section
"Effects of the materials of the mounting surfaces on the range (Page 296)")
● The maximum range shown in the section "Maximum read/write ranges of transponders
(Page 297)" applies only to read operations.
With write operations, the range is reduced as described in the section.
● Effects that reduce read/write ranges have been avoided (see section "Antenna
configurations (Page 40)").
7.1.5.1 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:
RF620A, RF642A
● Circular antennas:
RF640A, RF660A, RF650A
● Antennas that can be switched over (linear/circular)
RF680A
SIMATIC RF600
System Manual, 10/2016, J31069-D0171-U001-A19-7618
Transponder
7.1 Overview
293