Led Display - Siemens SCALANCE XR-300M Operating Instructions Manual

Enable/disable the redundancy manager
1. Turn on display mode B. Display mode B is active when the "DM" LED is lit green. If a
different display mode is active, you will need to press the SET/SELECT briefly (possibly
several times) until display mode B is active.
2. Hold down the SET/SELECT button for five seconds. After three seconds, the "DM" LED
begins to flash. If you release the button before the five seconds have elapsed, the action
is aborted.
3. The result of the action depends on the initial situation:
– If the redundancy manager and media redundancy were disabled, media redundancy
– If you disable the redundancy manager, media redundancy remains enabled.
3.5

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
-
green
green
The "SB" LED for the standby function
This LED shows the status of the standby function.
LED color
-
green
green
SCALANCE XR-300M
Compact Operating Instructions, 05/2016, A5E02661171-11
is also enabled after enabling the redundancy manager.
LED status
off
on
flashes
LED status
off
on
flashes
Meaning
The device is not operating in the role of "redundancy manager".
The device is operating in the role of redundancy manager. The
ring is working without problems, monitoring is activated.
The device is operating in the role of redundancy manager. An
interruption has been detected on the ring and the device has
switched through.
Meaning
The standby function is disabled.
The standby function is enabled. The standby section is passive.
The standby function is enabled. The standby section is active.
Description
3.5 LED display
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