Each bit is set to 1 by the system and reset to 0 by the user.
See the list below.
Description of the Bits
bit 0 = "aperiodic sequence time-out": indicates that the messages or aperiodic variables window has overflowed its limit within an elementary cycle of the macro-cycle.
bit 1 = "refusal of messaging request": indicates that the message queue is saturated - for the time being the bus arbiter is in no position to latch onto nor to comply with a request.
bit 2 = "urgent update command refused": indicates that the queue for urgent aperiodic variables exchange requests is saturated - for the time being the bus arbiter is in no position to latch onto nor to comply with a request.
bit 3 = "non-urgent update command refused": indicates that the queue for non-urgent aperiodic variable exchange requests is saturated - for the time being the bus arbiter is in no position to latch onto nor to comply with a request.
bit 4 = "pause fault": the bus arbiter has not detected any bus activity during a time period larger than the standardized WorldFip time period.
bit 5 = "a network collision has occurred on identifier transmission": indicates activity on the network during theoretical pause periods. Between a transmission and awaiting a reply from the bus arbiter, there should be nothing circulating on the bus. If the bus arbiter detects activity, it will generate a collision fault (for example, when several arbiters are active at the same time on the bus).
bit 6 = "bus arbiter overrun fault": indicates a conflict on accessing the bus arbiter station memory.
