Module 2 Pathway: Technician Industrial Control Logic
This document describes the second learning module for the Industrial Automation Technician.
Pathway Status: This module index is under active development. Available lessons are linked below; additional lessons and assessments will be added as they are completed.
This article is part of the DigiKey Structured Learning Pathways.
Location: Industrial Automation Technician
Author: Aaron Dahlen | MSEE | Senior Applications Engineer, DigiKey
Last updated: 24 Jul 2026
Why the Crouzet PLC? At this point in the pathway, the Crouzet PLC is the appropriate tool for teaching industrial control logic. Its graphical gate-level programming preserves the foundations of Boolean logic, while Sequential Function Chart makes states and transitions visible. This allows students to begin state-machine work earlier and spend more time practicing interlocks, permissives, resets, sequencing, and fault handling in the industrial environment where those ideas will be applied.
The Crouzet platform is used as a practical teaching implementation, not as the instructional objective. The underlying logic and state-machine concepts are transferable to other PLC platforms.
Introduction to Control Logic
State Machines
- Introduction to Crouzet PLC Sequential Function Chart (SFC) Programming
- Crouzet Sequential Function Chart Macro for a Three-Phase Motor Starter
- PLC Finite State Machine Control Using a Sequence Cam Block
- Prevent Unexpected Equipment Start-Up with Defensive PLC Programming