Abstract: A system for managing time-stamped events with uncertain events-sequence signalling, including a list of variables of which a change of value must lead to the detection of an event to be time-stamped and to be saved; means, for each variable, for positioning a marker indicating the quality of the time-stamping of said event; a buffer for the storage, before they are read by client software, of said events to be time-stamped and to be saved, associated respectively with a time-stamping time, said time-stamped events read by the client software being erased from the buffer; means for enabling and for disabling means for saving in a history the values of the variables corresponding to said time-stamped events that have been read.

Abstract: The present invention relates to a method for managing the restarting of automatic control equipment, consisting in: backing up, on an outage of the main electrical power supply, in a non-volatile memory (Flash 2) of the automatic control equipment, the data and a signature (LID?) associated with the mapping of the data in the volatile memory (RAM) of the application program which is running at the time of the outage, after the end of the main electrical power supply outage, reloading the application program into the volatile memory (RAM) from a backup available in another non-volatile memory (Flash 1), comparing the signature (LID?) with a signature backed up (LID) to decide on a restart of the automatic control equipment.

Abstract: A time management system that includes a first clock having a first counter operating on a first timebase, a second clock having a second counter operating on a second timebase identical to the first timebase and a third counter operating on a third timebase less than the second timebase. The time management system performs a resynchronization of the second clock after the main electrical power supply has been restored, this resynchronization including, on a modification of the first counter, loading the first counter into the second counter and in zeroing the third counter.

Abstract: The present invention relates to a method for managing the restarting of automatic control equipment, consisting in: backing up, on an outage of the main electrical power supply, in a non-volatile memory (Flash 2) of the automatic control equipment, the data and a signature (LID?) associated with the mapping of the data in the volatile memory (RAM) of the application program which is running at the time of the outage, after the end of the main electrical power supply outage, reloading the application program into the volatile memory (RAM) from a backup available in another non-volatile memory (Flash 1), comparing the signature (LID?) with a signature backed up (LID) to decide on a restart of the automatic control equipment.

Abstract: The present invention relates to a time management method implemented in automatic control equipment, based on a system which comprises: a first clock (H1) having a first counter (C1) operating on a first timebase, a second clock (H2) having a second counter (C2) operating on a second timebase identical to the first timebase and a third counter (C3) operating on a third timebase less than the second timebase, said time management method being characterized in that it consists notably in: performing a resynchronization of the second clock (H2) after the main electrical power supply (G1) has been restored, this resynchronization consisting, on a modification of the first counter (C1), in loading the first counter (C1) into the second counter (C2) and in zeroing the third counter (C3).