Allen-Bradley 1747-L514 CPU Processor Unit SLC 5/05

Allen-Bradley 1747-L514 CPU Processor Unit is a fixed SLC 500 controller module designed for compact automation tasks. It provides 4 KB of program memory and is part of the SLC 5/01 family, suitable for small-scale discrete or batch processes with straightforward control logic. The CPU integrates RS-232 communication (DF1/ASCII) and DH-485 networking, enabling device-to-controller communications and integration with standard SLC 500 I/O backplanes. Optional expansion memory is available via 1747-M1 (1 KB EEPROM) and 1747-M2 (4 KB EEPROM) to extend non-volatile storage for programs and data. In operation, it interfaces with compatible 1746/1747 I/O chassis and backplanes to execute ladder logic, timers, and counters. Common applications include simple material handling, packaging line control, and basic process sequencing where a compact, reliable PLC is appropriate. The L514 model delivers a compact footprint and a familiar SLC 500 programming model compatible with RSLogix 500, making it suitable for legacy systems that require easy maintenance and long-term parts availability.