Product Details
Overview
The Allen-Bradley 1756-L61 ControlLogix controller is a high-performance processor module designed for demanding industrial automation tasks. With 2 MB of user memory, it supports large control applications and high-speed data handling across complex systems. The module integrates easily into ControlLogix chassis and communicates via RS-232 serial ports using multiple industrial protocols.
Technical Specifications
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Model / Part Number: 1756-L61
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Brand: Allen-Bradley
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Product Type: ControlLogix Processor Module
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Product Line: ControlLogix Series
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Fixed Memory Options: 2 MB, 4 MB, or 8 MB
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Nonvolatile Memory: CompactFlash Card (1784-CF128)
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I/O Capacity: 128,000 Digital I/O, 4,000 Analog I/O
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Communication Interface: RS-232 Serial Port
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Supported Protocols: ASCII, DF1 (Full/Half Duplex), DF1 Radio Modem, DH-485, Modbus (via logic)
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Program Scan Time: 0.08 ms per 1K of Boolean instructions
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Backplane Current Draw:
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5V DC: 1.2 A
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24V DC: 14 mA
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Battery Options: 1756-BA1, 1756-BATM, 1756-BATA
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Vibration Tolerance: 10–500 Hz
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Relative Humidity: 5–95% (non-condensing)
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Weight: 0.75 lbs (0.34 kg)
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Lifecycle Status: Discontinued / Obsolete
Key Features
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Designed for medium to large-scale automation systems
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Supports multiple communication protocols for flexible integration
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Compatible with ControlLogix chassis for modular expansion
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High-speed data processing with deterministic performance
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CompactFlash card support for data retention and transfer
Applications
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Process and machine control systems
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Data acquisition and supervisory control
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Integration of legacy and modern devices within plant networks
FAQs
Q1: What type of memory is included in the 1756-L61 module?
The module includes 2 MB of onboard user memory and supports external CompactFlash cards for nonvolatile storage.
Q2: Which protocols are supported by the RS-232 interface?
It supports DF1, ASCII, DH-485, and Modbus communication for flexible network integration.
Q3: Is the 1756-L61 still available for purchase?
The 1756-L61 has been discontinued by Allen-Bradley but remains supported for replacement and maintenance purposes.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Evolving SCADA System Architectures in Industrial Automation
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Choosing the Right Controller: PLC vs. Motion Controller in Industrial Automation
Selecting the optimal control architecture is a foundational decision in industrial automation. Engineers must frequently choose between a Programmable Logic Controller (PLC) and a dedicated Motion Controller. While both systems manage machinery, their underlying design philosophies differ significantly, impacting performance, scalability, and system integration.
Mastering PLC Power Supply Architectures and Operating Voltages
Selecting the correct operating voltage is a critical step in designing reliable industrial automation systems. Whether you are working with a compact PLC or a large-scale DCS, your power architecture dictates the system's longevity. In this guide, we explore the standard voltage ranges and power distribution strategies required to maintain stable factory automation operations.