IIoT, SCADA & Edge Connectivity calculator

OT Integration Readiness Score Calculator

Score OT integration readiness for a site or line. Score severity (impact if integration is delayed), occurrence (likelihood of integration trouble), and detection (likelihood current controls catch issues early). The engine returns a weighted readiness risk score for ranking comparable scope.

What this calculator does

  • Score OT integration readiness for a site, line, or asset using severity (impact if integration is delayed), occurrence (likelihood the integration runs into trouble), and detection (likelihood current controls catch issues early). The engine returns a weighted readiness risk score.
  • Use it when an OT lead is ranking which sites or lines to integrate first into MES, historian, or unified namespace, and needs a defensible single-number ranking.
  • It returns a single weighted readiness score for ranking OT integration scope (site, line, or asset).

Formula used

  • Weighted OT integration readiness score = severity × 0.40 + occurrence × 0.35 + detection × 0.25
  • Use the same FMEA scoring scale across sites or lines being compared.

Inputs explained

  • OT integration severity score: Score impact if integration is delayed or fails (production loss, missed customer commitment, regulator exposure) on the team FMEA scale.
  • OT integration occurrence score: Score likelihood of integration trouble using prior project data (legacy PLCs, undocumented tags, network gaps, weak OT support).
  • OT integration detection score: Score how likely current controls are to catch integration issues early (FAT, SAT, monitoring, change control).

How to use the result

  • Use it when prioritizing the OT integration backlog, when chartering a brownfield connectivity sprint, or when finance asks why one site is queued ahead of another.
  • It is a relative ranking tool. Two scopes scored on different scales cannot be compared; standardize the scale and the rubric first.

Common questions

  • Why a weighted formula? Severity drives priority more than occurrence or detection in OT, where a missed integration can stall a customer commitment. The 0.40 / 0.35 / 0.25 split reflects that bias.
  • How is this different from classic FMEA RPN? RPN multiplies the three scores (S × O × D). The weighted approach is more stable when scales differ, which is common across OT projects.
  • Who scores severity, occurrence, detection? A small cross-functional team: controls engineer, OT support, automation lead, and the receiving MES or analytics owner. Single-person scoring is unreliable.
  • How do I use the result? Sort scope by weighted score and start with the highest-risk readiness items. Lower-risk scope can move through the standard backlog.

Last reviewed 2026-05-12.