Collection: Allen-Bradley SLC 500 1746

The Allen-Bradley SLC 500 1746 family is a modular PLC I/O platform used with SLC processors, chassis, power supplies, and communication hardware. Its architecture centers on the 1746 chassis and backplane, where discrete input, discrete output, analog, specialty, communication, and power modules are installed alongside compatible processor hardware. SLC 500 systems were designed for machine control and general industrial automation, with support for local and remote I/O arrangements depending on the processor and network modules used. The 1746 range remains common in installed manufacturing systems because modules can be replaced individually while preserving the original rack structure, field wiring, and control program architecture.