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SKU:1747-L542
Allen-Bradley 1747-L542 SLC 5/04 32KB Modular CPU Processor Unit
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
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Beschrijving
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.
Aanvullende specificaties
- Grijs
- Groen
- DC-gevoed
- Modulair
Scalar (V/f)
Vector
Op netstroom
Koopgids
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Voor meer details kunt u onze Verzend- en Retourbeleid raadplegen.

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