PLC, PAC and Dedicated Controllers
How does a programmable logic controller(PLC controllers) work? A programable logic controller or a PLC controller usually comprises of three integral components, i.e., power supply, processor, and an input/output (I/O) section. In simple terms, the processor is referred to as the brain of the PLC as it is designed to perform multiple tasks related to machine tool, process-control functions, and production. A user can successfully operate PLC controllers by monitoring the current status of the inputs, executing the control program, and timely updating the status of the outputs.
Need help choosing PLC, PAC and Dedicated Controllers?
Discover the wide range of Modicon PLC controllers family, designed to meet diverse industrial automation needs. From small automated machines to advanced machine control systems, the Modicon range offers scalable, reliable, and high-performance PLC solutions.
Our portfolio supports:
- Scalable architecture: From entry-level controllers for simple tasks to powerful CPUs for demanding applications, Modicon PLCs grow with your system requirements. The Modicon range also supports from multi-axis motion control to high-availability redundant processes.
- Optimised machine performance: Achieve greater efficiency and responsiveness in your processes with robust control capabilities.
- Flexible integration: Seamlessly connect across various industrial environments using a wide array of supported communication protocols.
- IIoT-native edge control: Modicon edge controllers manage complex interfaces across assets and devices, or directly into the cloud. With embedded safety and cybersecurity, they enable secure, real-time data exchange and control for IIoT applications.
- EcoStruxure compatibility: Fully integrated into our's EcoStruxure™ platform, enabling seamless engineering, monitoring, and maintenance across the entire lifecycle.
Logic Controller - Modicon M221

Modicon PLC Configurator
Selecting the right PLC and IOs has never been so easy and fast. Save time during design and implementation into your project.
Logic Controller - Modicon M251
Ensure the longevity of your plant with Modicon PAC controllers. Our comprehensive range of controllers offers advanced features and scalable performance to automate processes of any size. Modicon PACs provide redundancy capabilities, functional safety, native Ethernet, embedded cybersecurity, and common programming software shared across all PAC controllers.

Modicon PAC forum
Connect with industry experts and peers on Exchange to get latest updates and ideas to increase efficiency with Modicon PAC controllers.
Modicon MC80
Modicon Libraries
Modicon M171/M172/M173
Modicon Edge I/O NTS
Modicon Edge I/O NTS is a robust IP20 distributed I/O system with a wide choice of modules. Edge I/O NTS is integrated in EcoStruxure Machine, Control and Automation Expert. It works with a large variety of PLCs as Modicon M241, M251, M262, M660, M340, M580, SoftdPAC, PacDrive and third-party PLC over Modbus TCP or EtherNet/IP. Modules and features presented will be deployed during 2025. For feature availability, check Release Notes.
Modicon TM3