Modules for Eaton controllers expand and enhance existing Eaton PLC systems or may be used where repairs are required. Modules can provide additional or different inputs or outputs, allow for various types of communication, or improve system memory.

Modules for Metz controllers are compatible with existing Metz PLC systems. These components are usually chosen to enhance a controller or may be required for repairs where a module is worn or damaged. Modules are often used in industrial automation and provide communication and input/output interface, power supply, and CPU and memory functions.

Modules for Schneider controllers are specifically designed for existing Schneider automation systems. They are commonly chosen to enhance a system, adding new capabilities, but may also be required for repair where a module is worn, broken, or outdated. PLC modules usually offer communication, memory and processing, power supply, and input/output capabilities.

Modules for Siemens controllers are compatible with existing Siemens PLC systems. These hardware components often expand and enhance functionality or may be required where a repair is necessary. Modular PLCs are used in industrial automation, and different modules are chosen for power supply, CPU, input/output, and communication tasks.