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Tutorial-first guidance for building, validating, and operating industrial control safely.

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Index

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Practical steps. Clear signals. Safe rollouts.

Getting Started

Start from zero: safe workflow, first project, and first deployment.

Welcome & SafetyA safe, beginner-first workflow and the terms used across the book.Your First ProjectCreate a minimal control graph with clear signals and observability.Validate & DeployValidate units, quality, and gates before deploying to a test target.Commissioning ChecklistsPrintable checklists for bring-up, risk reduction, and rollback readiness.

Core Concepts

Signals, units, quality, staleness, and safety gating.

Signals: Types, Units, QualityWhat a signal is and how to think about correctness in the field.Time, Rates, and StalenessUpdate rates, timestamps, timeouts, and what to do when data is late.Units and ScalingFrom raw device values to engineering units with explicit math.Safety Gating and Safe DefaultsHow to gate actions and choose safe behaviors on faults or disconnects.

Control Logic

Build predictable logic: determinism, state, patterns, and modes.

Fundamentals: Determinism and StateHow to build logic that behaves the same way every time.Practical PatternsDebounce, deadband, filters, watchdogs, latches, and setpoint limiting.Modes and State MachinesA simple approach to mode logic that stays readable under pressure.

Structured Text (ST)

Write small, safe, testable code for transformations and state machines.

ST Primer (From Scratch)Basic syntax, types, time, and safe patterns.ST RecipesCopyable snippets for clamp, debounce, edge detection, and small state machines.

Connectivity

Connect equipment and data sources safely with clear data contracts.

Overview: Data ContractsThe checklist that prevents 80% of integration errors.MQTT (Telemetry & Commands)Topic design, payload shape, quality fields, and operational gotchas.Modbus (Registers and Scaling)Register types, endianness, scaling math, and safe polling.OPC UA (Quality and Models)Node IDs, quality handling, staleness, and disconnect behavior.

Troubleshooting

Triage flow, common messages, and what to capture for escalation.

Triage (Step-by-Step)A safe sequence for diagnosing issues without making things worse.Messages: Errors & WarningsWhat common messages mean, likely causes, and what to do next.

Platform

ENGINEERING.

Architecture, repositories, local development, and release workflow.

Engineering

How the platform is built: architecture, repos, local dev, and release workflow.

Engineering Overview (0 → 100)What each major component does and how they work together.Repository MapWhere UI/backend/edge components live and what tech they use.High-Level ArchitectureUI ↔ backend ↔ edge runtime, plus messaging and storage.End-to-End Data FlowsHow designs become deployments and how telemetry reaches the UI.Local Development Quick StartRun the stack locally (Docker) and iterate on components safely.Build & Release NotesContainer build contexts, CI notes, and common build expectations.Common GotchasThe pitfalls that show up most often when wiring services together.

Reference

APPENDIX.

Quick references and a glossary.

Appendix

Quick references and a glossary.

GlossaryDefinitions of the terms used across this book.

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