Author Topic: Standards for hierarchical system states?  (Read 284 times)

Paul Lotz

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Standards for hierarchical system states?
« on: October 08, 2011, 09:02:48 am »
We designed our system components with five states: Off, Standby, Disabled, Enabled, Fault.  (We didn't base this off a standard, but we did have some examples.)

A given component may have one or more subcomponents.  A subcomponent never cares about the state of a supercomponent, but a component may care about the state of a subcomponent.  We are actively debating how much so, though.  In particular, if one of component A's subcomponents is in FaultState, does that mean that A is also in FaultState?  We have to date answered that question one way but now we are having second thoughts.

I have searched without any real success the last couple days for a great paper, book, example, or standard that will help here, but I haven't found much.  Maybe I don't know the right keywords.  Does anyone here know of a good reference?