4.4 LED display
The "RM" LED for the "redundancy manager" function
The "RM" LED indicates whether or not the device is operating in the role of redundancy
manager and whether or not the ring is operating error-free.
LED color LED status Meaning
- off The device is not operating in the role of "redundancy manager".
green on The device is operating in the role of redundancy manager. The ring
is working without problems, monitoring is activated.
green flashes The device is operating in the role of redundancy manager. An in‐
terruption has been detected on the ring and the device has switched
through.
The "SB" LED for the standby function
This LED shows the status of the standby function.
LED color LED status Meaning
- off The standby function is disabled.
green on The standby function is enabled. The standby section is passive.
green flashes The standby function is enabled. The standby section is active.
The "F" LED for the fault status
The "F" LED (fault) provides information on the error/fault status of the device. While the device
is starting up, this LED has the following meaning:
LED color LED status Meaning during the device startup
- off Device startup completed successfully.
red on Device startup not yet completed or a fault/error has occurred.
red flashes Bad firmware image.
During normal operation, the "F" LED provides the following information:
LED color LED status Meaning during operation
- off No operating problems.
red on The device has detected an error. The signaling contact opens.
Device description
4.4 LED display
SCALANCE X-300
Compact Operating Instructions, 11/2019, A5E00982643-18 35
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