LED Color Meaning
F Red An error occurred during operation with the device.
Red
R1 flashing yel‐
low at the same
time
A primary user was detected on all enabled channels.
(only when DFS is enabled or according to IEEE 802.11h)
P1
R1
Flashing yellow "Flashing" enabled using SIMATIC NET Primary Setup Tool (PST).
Note
Primary user (radar) on all enabled channels (only when DFS is enabled)
If the device detects a primary user (for example radar signals) on all enabled channels of the
WLAN interface, the LED F is lit and R1 flashes. No data traffic is then possible for the next
30 minutes. After this time, the device runs the scan again and checks whether a primary user
still exists. If no primary user is detected, data traffic is possible again.
The wait time of 30 minutes is necessary due to legal requirements and cannot be shortened
even by restarting the device.
Description of the device
3.5 LED display
SCALANCE W760/W720
Operating Instructions, 09/2017, C79000-G8976-C322-08 21
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