Introduction to PLC products in the United States—the three major schools of PLC products in the world

US PLC Brands: The Original School

2026 Industrial Intelligence Report

The US started it all—Modicon invented the PLC in 1968. Here's the American school—from field experience.

US Schools

Rockwell (A-B)

Leaders: PLC-5, MicroLogix, CompactLogix

Strength: Integration

Programming: RSLogix

Modicon

Leaders: Quantum, M340, Modicon Premium

Strength: Process control

Programming: Unity Pro

GE Digital

Leaders: Series 90, PACSystems

Strength: Versatility

Programming: Proficy

Market Position

#1
World Ranking
40%
Global Market
1968
First PLC Year

The US invented the PLC—and still leads. Rockwell dominates, Modicon is process standard, GE is versatile.

— Field Service Manager

Brand Details

Brand Key PLC Focus>
Rockwell ControlLogix Discrets control
Modicon Quantum Process control
GE Digital PACSystems Versatility
AutomationDirect DirectLogic Budget options
Pro-Tip: US PLCs lead on integration—FactoryTalk ecosystem. Software licensing costs add up.

Choose: Rockwell for integration (most expensive), Modicon for process, GE for versatility.

FAQ

+Best US brand?
Rockwell for integration, Modicon for process. GE is good all-around.
+Advantages over European?
Integration and ecosystem. Software costs more but works together better.
+Programming language?
Ladder logic dominant (RSLogix). Now support IEC 61131-3 across platforms.

Need US PLC Support?

We service all US PLC platforms.

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