tutorial.ii

EPICS DetailIntended for an audience of EPICS application developers.OPI IOCDetails DetailsEPICSDetailsCADetailsEPICS Tutorial: Detail 1 of 32 Sept, 1998./D. Barker, TJNAF.& S. Lewis, LBNLEPICS Records.• Ai, Ao Analog In/Out. Read/write value from/to ADC/DAC.• Bi, Bo Binary In/Out. Read/write from/to digital hardware.• Li, Lo Long Word In/Out. Read/write from/to scalars/counters.• Si, So String In/Out. Store useful strings.• Calc Calculation Record. Arbitrary one-line processing.• Compress Compression/Circular Buffer/Min-Max-Avg container.• Event Generate Asynchronous Software Events• Histogram Acquire Histogram.• Sub Subroutine Record. Arbitrary ‘C’ language routine.• Waveform Waveform Record. Reads an array of data from Hardware.• SubArray Extract variable portion of Waveform array.• D/Fanout Fanout of Data/Fanout of processing links.• Sel, Seq Select among processing links; Sequence records with time delay.• Scan, Wait Multi-dimensional control of “detector” motion and operation.• Timer, Motor Control timing hardware; Drive stepper motor/encoder assembly....and many application-specific record types, e.g., PID, HiV, pulse, vmeProbe.EPICS Tutorial: Detail 2 of 32 Sept, 1998./D. Barker, TJNAF.& S. Lewis, LBNLRecord LinkingDatabase records do not always exist in isolation; they may be linked to each other forprocessing flow and data exchange. This is a great strength of EPICS, but proper usagerequries careful study by application developers ...