2.9 sddscaplayback

• description: sddscaplayback reads waveform data from a multi-page SDDS file and writes the values to EPICS process variables at a fixed interval. Each page in the input file represents a set of numerical values for a single PV, which may be sent either as absolute values or as differences from the current value.
• examples: The following command plays back the waveforms in orbit.sdds once with a half-second interval between pages.
  sddscaplayback orbit.sdds -interval=0.5 -mode=absolute -repetitions=1

• synopsis:
  usage: sddscaplayback <inputFile> -interval=<seconds> [-repetitions=<number>]  
  -mode=\{absolute|differential\} [-triggerPV=<string>] [-controlNameParameter=<string>]  
  [-dataColumn=<columnName>] [-offset=<integer>] [-timeOffset=<seconds>]  
  [-factor=<value>] [-restore] [-verbose] [-pendIOtime=<seconds>]  
  [-runControlPV=string=<string>,pingTimeout=<value>]  
  [-runControlDescription=string=<string>]

• files: The input file is an SDDS file containing a string parameter ControlName for the PV name and a numerical column Value (or the column specified by -dataColumn) for the waveform data. Each page corresponds to a different PV.
• switches:
  • -interval=<seconds> — Interval between sending pages.
  • -repetitions=<number> — Number of times to loop through pages; default is infinite.
  • -mode={absolute|differential} — Send values directly or as differences from starting values.
  • -triggerPV=<string> — PV that restarts playback when it changes.
  • -controlNameParameter=<string> — Name of parameter holding PV names; defaults to ControlName.
  • -dataColumn=<columnName> — Column containing waveform data; defaults to Value.
  • -offset=<integer> — Offset into pages used as circular buffer.
  • -timeOffset=<seconds> — Fine time offset less than the interval.
  • -factor=<value> — Scale factor applied to waveform data.
  • -restore — Restore PVs to starting values on exit.
  • -verbose — Print status information.
  • -pendIOtime=<seconds> — Channel access pend IO time.
  • -runControlPV=string=<string>,pingTimeout=<value> — Enable run control monitoring.
  • -runControlDescription=string=<string> — Description used with run control.
• see also:
  • sddslogger()
  • sddscaramp()
  • sddssnapshot()
• author: Michael Borland, ANL/APS.