General

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• All SQL statements are stored in .properties files in corresponding packages

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• aka device, input, signal
• The basic event in the MPS, usually a PV
• Has two states: OK (true or 1) and Faulted (false or 0)
• Stored in the Config DB
• 4 types: EPICS, LinkNode, LinkNodeChannel, LinkProcessor
  • Classes in MPS Config edu.stanford.slac.mps.fault
• Fault number is the key, fault names may be changed (manually)

Macro

• aka Truth Tabletruth table
• Defines 2-4 #MacroStates for 1-2 faults
  • The order of faults matters (there is a column "position" in the DB)
  • May need support for more than 2 faults in the future (currently not supported)

    Ignoring Macro

• aka (ignore) condition
• Sort-of "meta"-macros that can ignore other macros
  • Useful, if e.g. the fault hardware misbehaves
  • Can be set active or inactive (by MPS engineers, not operators)
  • If active, it is important to know the minimum rate the MPS would allow, if the macro became inactive
  • Some macros are always evaluated
  Some macros, called "ignoring macros", may ignore other
• Stored in the Logic DB

MacroState

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