Allen‑Bradley 1747‑L543 SLC 5/04 PLC CPU Processor Module

Product Description

The 1747‑L543 is a high‑performance CPU processor belonging to Rockwell Allen‑Bradley SLC 500 control platform, also known as SLC 5/04 controller with 64K user program memory. 

It undertakes logic computation, program execution, PID closed‑loop regulation and local & distributed I/O data processing. Equipped with built‑in DH+ industrial network and RS‑232 serial port, 

it supports multi‑PLC interconnection and upper computer programming communication. This processor must be installed in Slot 0 of 1746 series chassis, compatible with full range SLC500 I/O modules. 

Widely deployed in material handling, packaging machinery, water treatment and general process industry control cabinets. This product has been officially discontinued, serving as critical maintenance 

spare for legacy SLC500 automation systems.

Technical Specifications

Full Model: 1747‑L543 Brand: Allen‑Bradley (Rockwell Automation), Origin: USA Applicable System: SLC 500 PLC System, 1746 Series Chassis Module Type: SLC 5/04 CPU Processor User 

Memory: 64K words Max I/O Capacity: Up to 4096 input & 4096 output points On‑board Communication: DH+ network interface, RS‑232 serial port Programming Software: RSLogix 500 Backplane 

Power Draw: 500mA @ 5V DC Installation: Slot 0 dedicated slot of 1746 rack Operating‑Temperature: 0℃ ~ +60℃ Storage‑Temperature: ‑40℃ ~ +85℃ Ambient Humidity: 5%‑95% non‑condensing 

Net Weight: Approx. 0.38 kg Product Status: Discontinued / Obsolete

Key Features

64K large‑capacity program memory for medium‑to‑large‑scale industrial control projects Dual built‑in communication ports: DH+ high‑speed industrial network and RS‑232 programming port 

Supports PID closed‑loop control, advanced instruction set and distributed I/O architecture Front‑panel LED indicator lights for real‑time working state and fault diagnosis Battery‑backed memory 

prevents program loss during power outage Strict installation requirement for chassis Slot‑0 position, works with all SLC500 I/O modules Proven stable hardware for long‑term operation in factory 

cabinet environment Important spare component for renovation and fault replacement of existing SLC500 control systems