Allen-Bradley 1747-L514 Programmable Logic Controller Module

Allen-Bradley 1747-L514 is a SLC 500 modular processor (CPU) in Rockwell Automation’s SLC 500 family, designed for compact control tasks within legacy automation systems. This 5/01-series CPU installs in a 1747 backplane with I/O modules to execute ladder logic programs stored in up to 4000 user memory instructions. The processor delivers a bit execution time of up to 4 microseconds and a module scan time of roughly 8 milliseconds, defining the speed at which input changes are processed and outputs updated in a single cycle. As part of the SLC 500 modular hardware style, the L514 provides central processing for discrete I/O control, timers, counters, and simple arithmetic instructions, commonly used in small manufacturing lines, packaging, and material handling setups. The model is documented within the 1747-L511/L514/L524 family of 5/01 and 5/02 processors and is designed for use with the standard SLC 500 backplane architecture, enabling compatibility with a broad range of standard 1747 I/O modules and accessories.