Product Details
Overview
The 1756-L55M12 (1756-L55M12) is a high-performance Logix5555 processor designed for the Allen-Bradley ControlLogix platform. This module is engineered to handle complex control engine requirements, providing a multitasking operating environment that supports multiple programming languages including Ladder Logic, Structured Text, and Function Block Diagrams. With 750 Kilobytes of available user memory, it offers a reliable solution for medium-scale industrial applications requiring precise I/O management and fast logic execution.
Technical Specifications and Performance Data
The 1756-L55M12 (1756-L55M12) integrates directly into any slot of a ControlLogix chassis, leveraging the high-speed backplane for data distribution and peer-to-peer communication.
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Memory Configuration: 750 Kilobytes of User RAM (Non-volatile storage available via optional CompactFlash on newer Logix series, but this legacy unit utilizes battery-backed RAM).
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I/O Capacity: Supports a maximum of 128,000 total I/O points.
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Analog Scaling: Capable of managing 4,000 Analog Inputs and 2,000 Analog Outputs.
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Logic Execution Time: Typical program scan time of 0.08 milliseconds (specific to simple logic rungs).
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Current Draw: 1.23 Amps at 5.1V DC; 14 milliamps at 24V DC.
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Thermal Dissipation: Approximately 19.1 BTU per hour.
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Communication Options: Compatible with EtherNet/IP, ControlNet, DeviceNet, and Data Highway Plus through respective communication modules.
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Battery Backup: Compatible with 1756-BA1 or the 1756-BATM externally mounted battery assembly for extended program retention.
Environmental and Physical Standards
The hardware is designed for continuous operation in industrial environments, adhering to strict vibration and temperature tolerances.
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Operational Temperature: 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit).
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Storage Temperature: -40 to 85 degrees Celsius (-40 to 185 degrees Fahrenheit).
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Humidity: 5% to 95% non-condensing.
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Vibration Resistance: 2.0g @ 10 to 500 Hertz.
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Weight: 0.37 kg (0.81 lbs).
Common Technical Inquiries
How is the user memory partitioned in the 1756-L55M12?The 750KB of memory is shared between data storage and the application code. Unlike legacy PLC-5 systems, the ControlLogix platform allocates memory dynamically based on the tag-based database structure.
Which programming software is required for this module?The 1756-L55M12 (1756-L55M12) is typically programmed using RSLogix 5000 software. The firmware revision of the processor must match the major version of the software project.
What is the purpose of the 1756-BATM?While the 1756-BA1 is a standard internal battery, the 1756-BATM is an optional battery module used for applications where the controller is powered down for long periods, providing significantly higher mAh capacity to preserve memory.
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
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