Northampton County Digital Twin

ISA-95 Enterprise Control System Architecture

74 modules across 5 ISA-95 levels

L4 Business

ERP - Enterprise Planning Active

Business planning, logistics, and high-level scheduling. Multi-year budget planning, workforce planning, capital program management.

Budget Planning HR Systems Procurement Strategic Planning
L3 Operations

MOM - Operations Management Active

Manufacturing Operations Management adapted for county government. Coordinates production, quality, maintenance, and inventory operations across all departments.

Production Ops Quality Ops Maintenance Ops Inventory Ops
L3 Execution

MES - Execution System Active

Work order management, scheduling, and real-time tracking. Manages citizen requests, permits, filings, and case workflows through row officer offices.

Work Orders Scheduling WIP Tracking Genealogy
L2 Control

SCADA - Supervisory Control Active

Real-time monitoring and control dashboards. View KPIs, alarms, OEE metrics, and operational status across all county departments and row officer offices.

Dashboards Alarms OEE Metrics Real-time Status
L1 Transactions

L1 - Transaction Layer Active

Individual work items: claims, warrants, audit findings, payments. Each transaction is signed, tracked, and supports cryptographic verification.

Claims Warrants Audit Findings Blockchain Signing
L0 Data

L0 - Base Data Types Active

Foundational types: Money, Person, Account, LegalReference. Enums for state management. JSON schemas for validation.

Money Type Person Type Enums JSON Schemas

What is an Enterprise System?

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An enterprise system is an integrated software platform that coordinates all the information and processes across an organization. Originally developed for manufacturing, the ISA-95 standard provides a proven framework that translates directly to government operations.

Why ISA-95 for Government?

  • Row offices are production lines - Each processes "work items" (permits, filings, cases) through defined workflows
  • Citizens are customers - They expect quality service, timely delivery, and transparent status
  • Efficiency matters - Tax dollars fund operations; waste affects everyone
  • Standards exist - ISA-95 has 25+ years of proven methodology

The Four Levels Explained

  • Level 4 (ERP) - Long-term planning: budgets, workforce, strategic initiatives. Answers "What should we do this year?"
  • Level 3 (MOM/MES) - Operations: work orders, scheduling, resource allocation. Answers "What are we doing today?"
  • Level 2 (SCADA) - Real-time monitoring: dashboards, alarms, KPIs. Answers "What's happening right now?"
  • Level 0-1 - Physical processes: the actual work being done (not shown here)

How to Use This System

  • Start with SCADA - Get real-time visibility into all departments. Identify bottlenecks and issues.
  • Drill into MES - See individual work orders and cases. Track progress through workflows.
  • Review MOM - Understand cross-functional operations. See how departments coordinate.
  • Plan with ERP - Make data-driven budget and staffing decisions based on actual operations.

Key Metrics

  • OEE (Overall Equipment Effectiveness) - Measures how well a department uses its time: availability × performance × quality
  • Cycle Time - How long to complete a typical work item (permit, filing, case)
  • Backlog - Work waiting to be processed; indicates staffing needs
  • First-Pass Yield - Percentage completed correctly the first time

This digital twin demonstrates how industrial automation principles can modernize government operations. The goal: transparent, efficient, accountable public service.