IIoT, SCADA & Edge Connectivity worked example

SCADA Screen Utilization at 86% screen use-rate target: a worked example

What does the result look like when screen use-rate target reaches 86%? The full calculation is worked below with real intermediate numbers. Use it when an HMI design or operations lead is checking which SCADA screens are actually being opened by operators, before pruning unused screens during a screen rationalization or HMI redesign.

The inputs for this scenario

  • Screens opened by operators in the period: 180 screens (unchanged)
  • Total deployed SCADA screens: 260 screens (unchanged)
  • Screen use-rate target: 86 % (raised for this scenario; the documented default is 75)

Working through the calculation

  • Applying the documented formula (SCADA screen use rate = screens opened ÷ total deployed screens × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 69.23 % for scada screen use rate, the number this scenario is built around.
  • At this operating point the engine returns 16.77 points for use-rate gap to target.
  • At this operating point the engine returns 180 count for screens opened by operators.
  • At this operating point the engine returns 260 count for total deployed scada screens.

How this compares with the baseline

  • Against the tool's baseline example, where screen use-rate target sits at 75% and the headline result is 69.23 %, this scenario lands almost exactly on the baseline at 69.23 %.
  • A figure at this level is achievable when screen use-rate target is genuinely sustained, not just peaked for a shift. Opening a screen is not the same as relying on it; some critical screens are opened rarely yet essential, so never retire low-use screens on this metric alone without operator review.

Results at a glance

  • SCADA screen use rate: 69.23 % (headline result)
  • Use-rate gap to target: 16.77 points
  • Screens opened by operators: 180 count
  • Total deployed SCADA screens: 260 count

Run it with your numbers

  • Every input above is editable in the live SCADA Screen Utilization calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.