General design

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

Glossary

Fault

• aka input
• Basic event in the MPS, usually a PV
• Has two states: OK (true) and Faulted (false)
• 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 Table
• Defines 2-4 MacroStates for 1-2 faults
  • May need support for more than 2 faults in the future (currently not supported)
• Stored in the Logic DB

MacroState

• Defines beam rates for the state of a macro
• The state number reflects the state of faults;
  • Example for 2 fault A and B:

    State Number	Binary Representation	B	A
    0	00	F	F
    1	01	F	T
    2	10	T	F
    3	11	T	T