The Allen-Bradley 1747-L524 SLC 5/02 Processor is a modular CPU for the SLC 500 PLC family that executes ladder logic in a backplane-based rack. It provides 4K of user memory in the Series B/C variants (1747-L524/B, -C), with a 1K option available in the Series A variant (1747-L524/A). The processor uses DH-485 communications over RS-485 to connect I/O and devices in the SLC 500 network, making it a classic choice for mid-range automation tasks requiring reliable discrete control and sequencing.
