Siemens SIMATIC NET SCALANCE XM-400 - Rm Led; Sb Led

Description of the device
4.7 LED display
SCALANCE XM-400
Operating Instructions, 09/2018, C79000-G8976-C306-08
33
4.7.2
"RM" LED
The "RM" LED indicates whether or not the device is a redundancy manager and whether or
not the ring is operating free of error.
LED color
LED status
Meaning
-
Off
The device is not a redundancy manager.
Green On The device is a redundancy manager.
The ring is working without problems, monitoring is activated.
Green Flashing The device is a redundancy manager.
An interruption has been detected on the ring and the device
has switched through.
4.7.3
"SB" LED
With a redundant linking of rings, the "SB" LED shows the status of the redundant
connection. The available options of a redundant link are as follows:
● Standby Function
● MRP Interconnection
Standby Function
LED color
LED status
Meaning
-
Off
The standby function is disabled.
Green On The standby function is enabled. The standby section is pas-
sive.
Green
Flashing
The standby function is enabled. The standby section is active.
MRP Interconnection
LED color
LED status
Meaning
-
Off
MRP Interconnection is disabled.
Green
On
MRP Interconnection redundancy is available.
Green
Flashing
MRP Interconnection redundancy is not available.