Overview
The Allen-Bradley 1747-L542 is a mid-range processor in the SLC 500 modular family, specifically an SLC 5/04 CPU designed for scalable industrial automation control. This Series B processor delivers balanced performance for packaging, material handling, process control, and discrete manufacturing applications where moderate I/O counts and program complexity are required. With 32K words of user memory (28K for program/data, 4K for data only), battery-backed RAM, and integrated communication ports, the 1747-L542 enables rapid deployment of control systems that require network integration and local I/O expansion.
Key Features
- 32K Word Memory: Battery-backed RAM divided into 28K words for program storage and 4K words of data memory
- Dual Communication Ports: Data Highway Plus (DH+) and RS-232 communication ports for integration with HMIs, SCADA systems, programming terminals, and peer-to-peer communication with other Rockwell controllers
- High I/O Capacity: Support for up to 4096 inputs and 4096 outputs
- Advanced Instructions: Advanced math functions including trigonometric, PID, exponential, floating-point operations, indirect addressing, and logical ASCII addressing
- Modular Expansion: Configuration support for up to three chassis or a total of 30 slots
- Safety Compliance: UL listed, CE compliant, C-Tick marked
Technical Specifications
The following specifications define the operational and physical characteristics of the 1747-L542 processor:
