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Application Examples
6.2 Example of an application "optimize antenna position"
5. By adjusting the antenna or transponder horizontally or vertically and by adapting the
6. Once you have found the optimum position secure the antenna in this position.
Possible error symptoms and how to counter them
Error symptom 1:
Despite optimization measures, the transponder data cannot be read out regularly.
Countermeasure 1:
Select an adequately high transmit power (see example "Example of an application
"Determining transmit power" (Page 69)") and optimize this, if necessary using further UHF
algorithms.
Error symptom 2:
Despite adapting the transmit power, the transponder data cannot be read out regularly.
Countermeasure 2:
Optimizing the reading point:
● Antenna position and alignment
● Transponder alignment
● possibly use of absorption materials
Further options open to you include the choice of alternative antennas or the use of multiple
antennas for a reading point (diversity).
You will find further information on the set and achievable distances in the section "RF600
system planning" in the "RF600 system manual
(http://support.automation.siemens.com/WW/view/en/22437600)".
68
angle of inclination, find the position at which the highest RSSI value is displayed in the
diagnostics tool.
The display of the RSSI value is indicated in a large font and can therefore be read at the
distance of several meters. A good antenna position results in a high and stable RSSI
value.
If the transponder cannot be identified at any position, increase the transmit power by one
level and repeat step 5.
Operating Manual, 09/2012, C79000-G8976-C292-01
SIMATIC RF-DIAG

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