Learn SCHNEIDER-ECOSTRUXURE-UNITYPRO with Real Code Examples

Control Expert provides a unified environment for programming Schneider Modicon PLCs.

Supports all IEC 61131-3 languages like Ladder, FBD, ST, SFC, and IL.

Includes built-in simulation tools for offline testing.

Offers powerful diagnostics, trace tools, and real-time debugging.

Used in industrial automation including manufacturing, utilities, and infrastructure.

Ladder Diagram (LD) editor

Structured Text (ST) development

Sequential Function Charts (SFC)

Function Block Diagram (FBD) builder

Hardware configuration for Modicon PLCs

POUs - Program Organization Units (Programs, Functions, Function Blocks)

Tasks - define execution frequency

DTM - communication configuration layer

Variables - global, local, external

Sections - code segments within each POU

Project root

Hardware configuration

Application tasks

POUs (Programs, FBs, Functions)

Libraries and external modules

Create new project and select PLC model

Configure hardware modules and communication

Develop logic in IEC languages

Simulate or connect to PLC

Download, test, and monitor operations

Beginner: simple ladder logic

Intermediate: ST logic + FBD control

Advanced: SFC for sequences and batch

Expert: multi-rack systems with comms

Architect: enterprise-level industrial lines

Control Expert vs Siemens TIA Portal: TIA more modern UI, Control Expert better for Modicon ecosystems

Control Expert vs RSLogix: RSLogix easier for Ladder-only workflows

Control Expert vs TwinCAT: TwinCAT more PC-based, Control Expert PLC-focused

Control Expert vs Omron CX-Programmer: Control Expert stronger for ST/SFC

Control Expert vs Mitsubishi GX Works: Schneider better for multi-protocol comms

2006 - Unity Pro launched

2010 - Advanced SFC updates

2014 - Modicon M580 support

2017 - Renamed to Control Expert

2019 - EcoStruxure integration

2021 - Cybersecurity enhancements

2023 - Performance improvements

2024 - M262, M580 updates

2025 - Latest communication stack updates

POU - Program Organization Unit

DTM - Device Type Manager

SFC - Sequential Function Chart

FBD - Function Block Diagram

Rung - Ladder logic element