validity duration has elapsed without this GSSE being received again (i.e.
because of a communications fault), the signals received will automatically be
set to their respective default value (e.g. GSSE: Input 1 default).
The various settings, measured values and signals for function group GOOSE are
described in chapters 7 and 8.
P631
3 Operation
3-32 P631/EN M/R-11-C // P631-310-650