WB, station and platform all have this log message when FIPS mode is loaded, if the "security.initializer" log is set to FINE.
MESSAGE [13:21:23 30-Oct-18 EDT][sys.registry] Loaded [669ms]
MESSAGE [13:21:59 30-Oct-18 EDT][sys]
FIPS mode successfully loaded.This message appears on
MESSAGE [13:21:23 30-Oct-18 EDT][sys.registry] Loaded [669ms]
MESSAGE [13:21:59 30-Oct-18 EDT][sys]
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********* FIPS MODE IS LICENSED BUT DISABLED! *********
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You also get a popup dialog in