Product Details
Technical Overview
The 1756-L55M13 is a high-performance central processing unit within the ControlLogix 5555 controller family. Engineered for complex industrial automation tasks, this module provides robust control for large-scale applications requiring high-speed logic execution and significant I/O capacity. It features a 1.5 MB user memory and a dedicated 208 KB I/O memory buffer, ensuring efficient data handling and minimized scan times for critical process control.
Designed for chassis-based mounting, the 1756-L55M13 communicates across the 1756 backplane and includes an integrated RS-232 serial port for local programming, diagnostics, and interfacing with older peripheral devices. While the series has been succeeded by newer Logix controllers, it remains a cornerstone for maintaining and supporting legacy ControlLogix architectures.
Product Specifications
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Manufacturer: Allen-Bradley / Rockwell Automation
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Controller Series: ControlLogix 5555
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Part Number: 1756-L55M13
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User Memory: 1.5 MB
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I/O Memory: 208 KB
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Maximum Digital I/O: 128,000 signals
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Maximum Analog I/O: 4,000 inputs / 2,000 outputs
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Logic Scan Time: 0.08 ms typical
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Integrated Communication: One (1) RS-232 Serial Port
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Backplane Current (5V DC): 1.23 Amps
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Backplane Current (24V DC): 14 mA
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Battery Support: Compatible with 1756-BA1 or 1756-BATM
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Operating Temperature: 0°C to 60°C (32°F to 140°F)
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Vibration Resistance: 2 G at 10 to 500 Hz
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Approximate Weight: 0.37 kg (0.81 lbs)
Application and Maintenance
The 1756-L55M13 is typically deployed in discrete manufacturing, motion control, and batch processing where high-density I/O and reliable performance are required. Users should note that this specific model was officially discontinued by the manufacturer on March 31, 2011, making it a critical item for spare-parts inventory to prevent extended downtime in existing facilities. Proper maintenance involves regular battery testing and firmware management via RSLogix 5000 software to ensure system stability.
Frequently Asked Questions
Is the 1756-L55M13 compatible with modern ControlLogix 1756-A7 or A10 chassis?Yes, the module is compatible with standard 1756 ControlLogix chassis. However, ensure that the power supply installed in the chassis provides sufficient 5V DC current to meet the 1.23A requirement of this processor.
Can I use this module to replace a 5580 series controller?No. The original description contained a conflict; the 1756-L55M13 belongs to the 5555 series. It cannot directly replace a 5580 series controller due to differences in architecture and software requirements.
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
Implementing FIFO and LIFO Data Sequencing in PLC Programming
Data management serves as a cornerstone of modern industrial automation. Whether tracking materials on a conveyor or managing batch sequences in a process, engineers frequently rely on sequential logic. Two primary structures—First-In-First-Out (FIFO) and Last-In-First-Out (LIFO)—form the bedrock of this data handling. Mastering these blocks allows programmers to optimize complex machine operations efficiently.
Evolving SCADA System Architectures in Industrial Automation
A robust Supervisory Control and Data Acquisition (SCADA) system serves as the heartbeat of modern industrial operations. Understanding SCADA system architecture is vital for engineers designing efficient control systems. These architectures have evolved from isolated, monolithic structures to highly interconnected, networked ecosystems. Choosing the right design requires balancing data visibility, processing power, and long-term scalability requirements.
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.