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1747-L542

Allen-Bradley 1747-L542 SLC 5/04 32KB Modular CPU Processor Unit

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  • Manufacturer: Allen-Bradley

  • Product No.: 1747-L542

  • Product Type: CPU Processor Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 450g

  • Shipping port: Xiamen

  • Warranty: 12 months

Polisi Pemulangan 30 Hari · Jaminan 12 Bulan
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Penerangan

Product Overview

The 1747-L542 is an advanced SLC 5/04 modular processor unit engineered by Allen-Bradley (Rockwell Automation) for the SLC 500 hardware series. Installed in slot zero (0) of compatible modular chassis, this controller features 32 KB of battery-backed user RAM (32,000 words total capacity split into 4K data and 28K program storage) and supports up to 4,096 discrete inputs, 4,096 discrete outputs, and 480 analog I/O points across a maximum of 3 local chassis and 30 slots. Equipped with built-in RS-232 and Data Highway Plus (DH+) communication ports, it delivers rapid performance with a 0.9 ms/K typical program scan time and a backplane current draw of 1 A at 5 V DC and 175 mA at 24 V DC.

Core Technical Advantages

  • High I/O Capacity: Manages up to 4,096 discrete inputs, 4,096 discrete outputs, and 480 analog channels across 30 local slots.
  • Integrated Dual Communication: Features native RS-232 and Data Highway Plus (DH+) ports for seamless HMI, SCADA, and peer-to-peer messaging.
  • Robust Memory & Diagnostics: Combines 32 KB battery-backed RAM (1747-BA) with comprehensive status LEDs for run, fault, battery, and port activity.

Technical Specifications

Parameter Specification Details
Brand & Manufacturer Allen-Bradley (Rockwell Automation)
Series & Module Type SLC 500 Series / SLC 5/04 Processor
Catalog / Part Number 1747-L542
User Memory Capacity 32 KB / 32,000 Words (Battery-Backed RAM)
Discrete I/O Points 4,096 Inputs and 4,096 Outputs (Max)
Analog I/O Points 480 Maximum Local Analog I/O
Chassis & Slot Capacity Max 3 Local Chassis / 30 Slots Total
Processing & Scan Times Program Scan: 0.9 ms/Kword; I/O Scan: 0.225 ms; Bit Execution: 0.37 ms
Communication Ports Data Highway Plus (DH+) and RS-232
Memory Backup Options Battery Backup (1747-BA) / Flash EPROM (1747-M13)
Backplane Current Draw 1 A at 5 V DC and 175 mA at 24 V DC
Operating Ambient Temperature 0°C to 60°C (32°F to 140°F)
Product Net Weight Approx. 0.45 kg (1.00 lbs)

Industrial Applications

  • Discrete Manufacturing Plants: Coordinates large-scale sequential automation across multi-chassis production lines.
  • Process Control & SCADA Nodes: Interfaces local machinery with supervisory HMI and control networks via DH+.
  • Legacy System Upgrades: Replaces older SLC 500 processors to expand program memory and communication bandwidth.

Wiring & Installation

  • Slot Placement: Insert the 1747-L542 processor securely into Slot Zero (0) of compatible 1746 modular chassis racks.
  • Communication Cabling: Connect RS-232 programming cables or Data Highway Plus (DH+) multi-drop network lines to respective ports.
  • Power & Battery Check: Ensure system power supply is seated on the far left and verify backup battery (1747-BA) connection.

Engineering Advantages

  • High-Speed Execution: 0.37 ms bit execution and fast scan times maintain strict loop control in automated tasks.
  • Robust Environmental Tolerance: Operates reliably from 0°C to 60°C with 5% to 95% non-condensing humidity endurance.
  • Flexible Networking: Built-in DH+ protocol enables high-speed data exchange with PLC-5 and other Allen-Bradley systems.

Technical FAQs

Q1: What is the total user memory capacity of the Allen-Bradley 1747-L542?
A1: The processor provides 32 KB (32,000 words) of user memory, partitioned into data and program storage.

Q2: Which communication interfaces are integrated into this SLC 5/04 processor?
A2: It features built-in Data Highway Plus (DH+) and RS-232 communication ports.

Q3: What chassis slot must the 1747-L542 processor be installed in?
A3: The controller must be installed directly into Slot Zero (0) of the local modular I/O chassis.

Product Resources

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🏷️ Tags: CPU Processor Unit
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