Siemens SIMATIC RF600 System Manual page 75

4. In the "RSSI display" area, you can see the current (light blue) and maximum reached
(dark blue) RSSI values.
Note
Transponder is not identified
If no transponder is identified, first increase the radiated power as described in the
following section. Then repeat the antenna adjustment.
Also check the polarization of your antenna. If the transponder always has the same
alignment, the antenna polarization should be adapted accordingly. If the transponder
moves or the alignment of the transponder varies, it is advisable to combine several
antenna polarization types or to select a circular polarization.
5. Optimize the antenna adjustment until the maximum possible RSSI value is reached.
6. Secure the antenna.
Note that the RSSI value depends on the following components:
● transponder used,
● antenna used,
● Polarization,
● reflecting and absorbent materials in the vicinity of the antenna.
Radiated power
Using the "Settings - Read points" menu item of the WBM, you can set the radiated power.
Select the radiated power so that the required transponders can be identified reliably but
without overreach. In this case, the following applies: "as much as necessary, as little as
possible".
In the "Settings - Activation power" menu item, you can find the optimum radiated power for
reliable transponder access.
SIMATIC RF600
System Manual, 06/2019, J31069-D0171-U001-A22-7618
4.7 Planning and installation of UHF read points
RF600 system planning
75