Operation
Operating Manual PSSu H m F DP ETH SD
1002323EN04
23
8.2.1
MBUS
The "MBUS" LED indicates the status of the FS and ST module bus.
Colour
Status
Meaning
No modules present
Green
FS and ST module bus are operating without fault
Red
Operating state "Safe condition of all FS outputs on the
PSSu system" or
Unable to locate at least one module
(e.g. a module has been removed during operation, actual/
registered hardware does not match)
Operating state "FS module bus in a STOP condition with
error: Major FS error"
