Siemens SIMATIC RF650R Configuration Manual page 254

Appendix
A.1 Planning and installation of UHF read points
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. 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 without creating overshoots.
254
SIMATIC RF650R/RF680R/RF685R
Configuration Manual, 10/2015, C79000-G8976-C386-03