Planning The Use; Selecting The Antenna; Internal Antenna - Siemens Simatic RF600 System Manual

Readers
5.4 RF640R reader
Ground connection
5.4.2

Planning the use

5.4.2.1

Selecting the antenna

With the SIMATIC RF640R, there are two ways of using the antenna that are mutually
exclusive:
● Either you use the internal antenna of the reader
● Or you connect an external antenna to the interface of the reader. The internal antenna of
the reader can then, however, not be used at the same time.
You can select the active antenna using the configuration software, "RF-MANAGER Basic
V2".
5.4.2.2

Internal antenna

Minimum mounting clearances of two readers
The RF640R has a circular polarized antenna. At 2000 mW ERP radiated power, due to the
aperture angle of the antennas, their fields can overlap considerably. It is no longer possible
to clarify in which antenna field access to the data of a tag is performed.
In order to avoid this, always keep a minimum distance of 6 m between two readers with the
maximum radiated power of 500 mW ERP.
140
(a) Hexagon-head screw
(b) Plain washer
(c) Cable lug
(d) Contact washer:
Use contact washers according to the
Siemens standard SN 70093-6-FSt-flNnnc-
480h for ground connection,
Siemens item No.: H70093-A60-Z3
System Manual, xx/2014, J31069-D0171-U001-A15-7618
SIMATIC RF600