MES, MOM & Shop-Floor Data Systems worked example

Machine Data Completeness at 68% target completeness rate: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop target completeness rate to 68%, then walk the calculation through step by step. Measure what percentage of connected machines have complete data feeds with all required tags reporting, and identify the gap to your completeness target.

The inputs for this scenario

  • Machines with complete data feeds: 38 machines (held at the documented default)
  • Total machines in MES scope: 45 machines (held at the documented default)
  • Target completeness rate: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Completeness rate = (machines with complete feeds / total machines in scope) x 100.
  • Machine data completeness rate works out to 84.44 % at these inputs, and this is the headline figure for the scenario.
  • Gap to completeness target works out to -16.44 points at these inputs.
  • Machines with complete data works out to 38 count at these inputs.
  • Total machines in scope works out to 45 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target completeness rate sits at 95% and the headline result is 84.44 %, this scenario lands almost exactly on the baseline at 84.44 %.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to target completeness rate, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. A machine counted as 'complete' here is binary — it does not measure feed quality, sampling rate, or how often a connected machine drops out intra-shift, so a high rate can still hide flaky tags.

Results at a glance

  • Machine data completeness rate: 84.44 % (headline result)
  • Gap to completeness target: -16.44 points
  • Machines with complete data: 38 count
  • Total machines in scope: 45 count

Run it with your numbers

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

Last reviewed 2026-05-12.