Siemens SIMATIC ET 200SP CM 1xDALI Manual page 111

Diagnostic alarms
6.1 Status and error displays
Table 6- 2
Flashes
When the CM 1xDALI receives an "IDENTIFY DEVICE" command (IEC 62386-103), the
LED Rx and Tx flash simultaneously at a frequency of 1 Hz and last about 10 seconds.
Table 6- 3
Table 6- 4
Table 6- 5
110
Meaning of the TX/RX LED displays
LED
TX RX
Off
Off
Flashes
Meaning of the 16V displays
LED
16V
CM 1xDALI integrated DALI power 16
V power on
On
CM 1xDALI integrated DALI power 16
V power off
Off
Meaning of FOV (Fault over voltage) displays
LED
FOV
Detected over voltage on the DALI bus
(between 38 V and 353 V (250 V AC))
On
The voltage on DALI bus is less than or
equal to 20.5 V
Off
Meaning of the PWR LED displays
LED
PWR
Power on (supply voltage present)
On
Power off (supply voltage missing)
Off
Meaning
Interface is transmitting
Interface is receiving
Meaning
Meaning
Meaning
ET 200SP Communication module CM 1xDALI (6ES7137-6CA00-0BU0)
Solution
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Solution
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Solution
Check the wiring and supply voltage of
DALI bus
For example, check if you connected
the city power to the DALI bus by mis-
take.
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Solution
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Check the supply voltage
Manual, 06/2019, A5E46959434-AA