Siemens SIMATIC NET SCALANCE W774-1 Operating Instructions Manual page 31

LED
P1
P2
R1
Note
Primary user (radar) on all enabled channels (only when DFS is enabled)
If the device detects competing radar signals on all enabled channels of the WLAN
interface, the F LED is lit and R1 flash. 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.
SCALANCE W774-1 / W734-1
Operating Instructions, 03/2022, C79000-G8976-C325-15
Color Meaning
Flashing red The bootloader waits in this state for a new firmware file that you can
download by TFTP.
Interval:
500 ms
on / 500 ms off
Flashing red Firmware on PLUG:
The device is performing a firmware update or downgrade.
Interval:
2000 ms
on / 200 ms off
Red A competing radar signal was found on all enabled channels.
Simultaneous
R1 yellow
flashing
Flashing yellow The port LEDs flash for detection of device location.
The "LED flash" function is
• Either with SINEC PNI
• Or via the WBM page "Discovery and Set via DCP"
Description of the device
4.5 LED display
31