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Allen-Bradley 1747-L542 | Programmable Logic Controller

Brand: Allen-Bradley

Model: Allen-Bradley 1747-L542 | Programmable Logic Controller

Origin: Switzerland

Warranty: 365 days

Quality: new/second-hand

Delivery method: express delivery

Telephone :+86 18020721390

WeChat:+86 18020721390Email:sakyzeng@foxmail.com

product details

Allen-Bradley 1747-L542: SLC 500 Series High-Performance Processor Module

1. Core Function and Positioning

The Allen-Bradley 1747-L542 is a high-performance programmable logic controller (PLC) processor module belonging to the SLC 500 series—a legacy line of modular industrial control systems widely used in manufacturing, machinery, and process automation. As the central processing unit (CPU) of SLC 500 configurations, it executes control logic, manages I/O data, and enables communication with other devices, supporting mid-to-large-scale automation tasks with its robust processing capabilities.


2. Key Specifications from Product Documentation

Parameter CategoryTechnical Details
Memory32K words of memory (program and data storage), sufficient for complex control programs and real-time data management.
Power RequirementsOperating voltage: 24V DC. Backplane current draw: 1000mA at 5V; 200mA at 24V.
I/O CapacitySupports up to 8192 digital I/O points. Configurable with up to 3 modular I/O chassis (30 slots total), with I/O point ranges from 4 to 4096.
Communication Interfaces- On-board DH+ (Data Highway Plus) port: Enables high-speed peer-to-peer communication with other SLC 5/04 processors and direct integration with PLC-5 controllers.
- RS-232 port: Facilitates programming, debugging, and connection to devices like HMIs or modems.
Programming & Performance- Programming software: RSLogix 500.
- Instruction set: 107 built-in instructions.
- Scan time: Typical 0.9ms/k; XIC (Examine If Closed) bit execution time: 0.37μs.
Clock/CalendarIntegrated real-time clock with accuracy: ±54 seconds/month at 25°C (77°F); ±81 seconds/month at 60°C (140°F).
Environmental & Physical Ratings- Enclosure: Open-type design with status LEDs (power, run, fault, etc.) for quick diagnostics.
- Shock resistance: 30g (peak).
- Vibration resistance: 0.015-inch displacement (10–500Hz).
- Operating temperature: 0°C to 60°C (32°F to 140°F).


3. Functional Role

  • Control Logic Execution: Runs user-programmed ladder logic to automate industrial processes (e.g., conveyor systems, assembly lines, or batch processing).
  • I/O Data Management: Communicates with SLC 500 I/O modules (digital, analog, specialty) to read sensor data and control actuators in real time.
  • System Integration: Via DH+ and RS-232, connects to HMIs, SCADA systems, and other PLCs, enabling centralized monitoring and control of distributed automation networks.


4. Application Scenarios

  • Manufacturing Lines: Controls sequencing, material handling, and quality checks in automotive, packaging, and electronics production.
  • Industrial Machinery: Manages pumps, motors, and valves in HVAC, water treatment, and food processing equipment.
  • Legacy System Upgrades: Remains a critical replacement part for existing SLC 500 installations, supporting continuity in facilities with established automation infrastructure.

1747-L542.蒋辉云.20220906_165026 (11)_pixian_ai.jpg


label: 1747-L542

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