IIoT, SCADA & Edge Connectivity worked example

OT Data Completeness at 72% tag delivery rate: a worked example

Suppose tag delivery rate falls to 72%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate the count of OT tags landing complete in the historian per period from tags published per polling cycle, planned cycles in the period, the share of polls that arrive (delivery rate), and the share of arriving polls that are within quality bounds.

The inputs for this scenario

  • Tags published per polling cycle: 500 tags / cycle (held at the documented default)
  • Planned polling cycles in the period: 60 cycles (held at the documented default)
  • Tag delivery rate: 72 % (the input this scenario stresses; the baseline uses 99.5)
  • In-spec quality rate: 98 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross tag samples = tags per cycle × planned cycles.
  • Complete tag samples per period works out to 21,168 tags at these inputs, and this is the headline figure for the scenario.
  • Gross tag samples per period works out to 30,000 tags at these inputs.
  • Delivery loss works out to 8,400 tags at these inputs.
  • Quality loss works out to 432 tags at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where tag delivery rate sits at 99.5% and the headline result is 29,253 tags, this scenario comes in 27.64% below the baseline at 21,168 tags.
  • It computes the number of complete, in-spec tag samples delivered in a period from gross polling volume, after applying delivery and quality rates. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Complete tag samples per period: 21,168 tags (headline result)
  • Gross tag samples per period: 30,000 tags
  • Delivery loss: 8,400 tags
  • Quality loss: 432 tags

Run it with your numbers

  • To rerun this with your own numbers, open the live OT Data Completeness calculator, set tag delivery rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.