• Probable Comparisons

    Our Centerline gives an at-a-glance comparison of current process variable values or historical aggregates against defined reliable operating ranges.

  • Real-Time Visualization

    Dynamic Trend controls display multiple limit types at once for a single tag, including Process Limits, Reliability Limits, Operating Limits and Safe limits.

  • Limit Management

    Utilize dynamic limits to accurately reflect where the plant should be operating by setting multiple limit types, multiple limits for each type, and complete versioning of limits.


Multiple limits can be established for each process data tag, and can even be associated with scripted and calculated tags. Tag limits can be entered directly as number values, reference calculated tag values, or use values imported from external databases. Furthermore, limits can be grade- specific, product-specific, or rate-specific.

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Generate reports on critical process and equipment variables. These reports can include the percentage of time each variable was within its limits or centerlines, information on individual out-of-centerline events, and “rollup” percentages for different groups of data over a specified period of time (daily, weekly, monthly, etc.).

Universal Limits & Alarms

Limits and alarms that are set up in PARCalarm can be accessed from other dataPARC applications, including Trends, Graphics, Centerlines, Logbook, Histograms, and SQL Reports.

  • Control limits calculated from historical data
  • Limits based on OEM design specifications
  • Environmental and/or governmental compliance limits
  • Customer specification/product quality limits

Want to Learn More?

Click the links below to recieve a FREE PDF on the solutions dataPARC has to offer for Operating Envelopes.