Allen-Bradley 1745-LP103 Programmable Controller CPU

The Allen-Bradley 1745-LP103 Programmable Controller CPU is a fixed CPU module in the SLC 100 family, delivering the processor, battery-backed CMOS RAM memory, and a built-in power supply in a single backplane-compatible unit. It is designed for use in the SLC 100 backplane and supports ladder-diagram programming, enabling straightforward implementation for small automation tasks. This FRN 4 revision of the LP103 model includes 16 discrete I/O circuits on the module and is intended to operate from common AC or DC power ranges within the SLC 100 ecosystem. The LP103 is a compact, field-replaceable CPU option suitable for discrete control, sequencing, timing, and simple automation tasks in legacy installations or compact automation projects where a cost-effective controller is required.