Allen-Bradley 1747-L30A SLC 500 Processor Unit is a fixed-processor module for the SLC 500 family that combines control logic, power, and communications in a single PLC unit. It provides 30 I/O points — 18 digital inputs and 12 digital outputs — and includes a 1K DH-485 serial communications interface for device networking. The unit is designed for 120/240 V AC operation and plugs into an SLC 500 rack to form a compact, stand-alone controller or part of a broader fixed-I/O system with compatible modules.
