Product Overview
The Allen-Bradley 1747-L532 E is a pivotal 16K memory SLC 5/03 processor module, representing a highly capable and versatile controller within the renowned SLC 500 programmable logic controller (PLC) family from Rockwell Automation. This processor serves as the central intelligence for small to mid-sized automation systems, executing user-defined ladder logic programs to control machinery, processes, and discrete manufacturing operations. The “E” suffix in the 1747-L532 E model denotes a specific hardware revision that includes enhanced features and reliability improvements over earlier versions. With 16K words of user memory, it provides ample space for complex control logic, data handling, and instruction sets. A key advancement of the SLC 5/03 series, embodied by this module, is the integration of multiple built-in communication ports, moving beyond the single channel of its SLC 5/02 predecessor and enabling more sophisticated network architectures.The Allen-Bradley 1747-L532 E is engineered for reliability in industrial environments and is designed to be installed in the leftmost slot of a 1746 modular I/O chassis. Its value lies in balancing processing power, communication flexibility, and cost-effectiveness for a wide range of applications. The processor controls all I/O modules within its chassis, processes ladder logic scans, manages data table operations, and facilitates communication with programming devices, operator interfaces, and other controllers. For countless facilities worldwide, the 1747-L532 E has been the workhorse controller for decades, managing everything from simple sequential machine control to more advanced applications involving analog control, data logging, and peer-to-peer messaging. It remains a critical component for maintaining, repairing, and extending the life of a massive installed base of SLC 500-based automation systems.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1747-L532 E |
| Manufacturer | Allen-Bradley (ROCKWELL Automation) |
| Product Type | Programmable Logic Controller (Processor/CPU) |
| Controller Series | SLC 500, SLC 5/03 Family |
| User Memory | 16K words |
| I/O Capacity | Up to 512 digital I/O points (max. chassis and module configuration dependent) |
| Data Memory | 2K words (typically for timer, counter, integer files) |
| Built-in Ports | Channel 0: RS-232 (DH-485/DF1 protocol, for programming/HMI); Channel 1: RS-232 (DH-485 protocol only) |
| Communication Protocols | DH-485, DF1 Full-Duplex, DF1 Half-Duplex Slave |
| Optional Communication | Requires 1747-KE module for DH-485 network connectivity; Supports 1747-SN Scanner for Remote I/O |
| Backplane Current Draw | 800 mA @ 5V DC (typical) |
| Battery | Lithium battery, 1747-BA or equivalent, for memory backup |
| Keyswitch | 3-position (RUN, REM, PROG) for mode control |
| Status Indicators | Multiple LEDs for CPU status, force status, battery, and communication activity |
| Real-Time Clock | Not included; requires 1746-RTC module |
