Allen-Bradley 1764-LSP MicroLogix 1500 Standard Processor Module

The Allen-Bradley 1764-LSP MicroLogix 1500 Standard Processor Unit is the CPU module that powers MicroLogix 1500 control systems when paired with a compatible base unit. It provides 7.65K user words of programmable memory for both the ladder logic program and data, configurable to suit your control needs. The processor exposes a single RS-232 serial port for programming and serial communications, supporting DF1 full-duplex communication and DH-485 networking in many configurations. As part of a two‑part MicroLogix 1500 architecture, the 1764-LSP works with a separate base unit that supplies the power, I/O interfaces, and address mapping; documentation notes the LSP across Series A (Revision C or higher) and Series B or higher revisions. Typical applications include small automation tasks such as simple sequencing, timer and counter logic, and basic control of digital inputs and outputs when used with expansion I/O modules. This unit remains the standard processor option within the MicroLogix 1500 family, designed for use with RSLogix 500 programming software to implement compact, ladder-based control in panel or machine-level applications.