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Model 7002Switch System Instruction Manual - Advanced Test ...

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IEEE-488 Reference5.6.1 Standard event statusThe reporting of standard events is controlled by two 16-bitregisters; the Standard Event Status Register and the StandardEvent Status Enable Register. Figure 5-6 shows howthese registers are structured.In general, the occurrence of a standard event sets the appropriatebit in the Standard Event Status Register. This registercan be read at any time to determine which, if any, standardevents have occurred. Also, with the proper use of the StandardEvent Status Enable Register, a standard event can setthe Event Summary Bit (ESB) of the Status Byte Register.This allows the programmer to take advantage of the servicerequest (SRQ) feature. See paragraph 5.6.8 for details.* ESR ? PON(B15 - B8) (B7)URQ(B6)CME(B5)EXE(B4)DDE(B3)QYE OPC(B2) (B1) (B0)Standard EventStatus Register&&&OR&To Event SummaryBit (ESB) ofStatus ByteRegister (SeeFigure 5-12).&&&* ESE* ESE ?(B15 - B8)PON(B7)URQ(B6)CME(B5)EXE(B4)DDE(B3)QYE OPC(B2) (B1) (B0)Standard EventStatus EnableRegisterPON = Power OnURQ = User RequestCME = Command ErrorEXE = Execution ErrorDDE = Device - Dependent ErrorQYE = Query ErrorOPC = Operation Complete& = Logical ANDOR = Logical ORFigure 5-6Standard event status5-8

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