1756-L71 Allen Bradley Rockwell ControlLogix Processor

Product parameters

Memory:

User memory: 2 MB

I/O memory: 0.98 MB

Non-volatile storage: Standard 1 GB SD card (1784-SD1), upgradable to 2 GB (1784-SD2)

Non-volatile storage is used to preserve data and programs in the event of power failure. It is recommended that the SD card always reside in the controller to store diagnostic data.

I/O capacity:

Digital I/O: Up to 128,000 points

Simulated I/O: Up to 4,000 points

Total I/O: Up to 128,000 points

Communication interface:

Built-in port: 1 USB 2.0 full-speed port (12 Mbps), for programming, configuration, firmware update and online editing

Supported communication protocols:

EtherNet/IP

ControlNet

DeviceNet

Data Highway Plus

Remote I/O

SynchLink

Third-party process and equipment networks

Power supply and energy consumption:

Current consumption: 5 mA at 1.2V DC and 800 mA at 5.1V DC

Power consumption: 2.5W

Heat dissipation: 8.5 BTU/ hour

Isolation voltage: 30V (continuous)

Environmental conditions:

Operating temperature: 0°C to 60°C

Storage temperature: -40°C to 85°C

Maximum ambient air temperature: 60°C

Relative humidity: 5% to 95% (non-condensing)

Vibration: 2G (10-500 Hz)

Operating impact: 30G

Non-operational impact: 50G (reduced to 45G when installing an SD card)

Physical properties:

Shell type: Open type (without shell)

Installation method: Rack type (ControlLogix rack, such as 1756-A4, A7, A10, A13, A17, etc.)

Display screen: 4-character alphanumeric display screen, used for runtime information and controller diagnosis

Energy storage module

Equipped with three capacitive energy storage modules (1756-ESMCAP or 1756-ESMCAPK), two of which are detachable, they are used to replace traditional batteries and support the preservation of RAM content.

There is another non-detachable module (1756-ESMNRM/1756-ESMNRMK) used to prevent unauthorized USB connections.

Others:

Number of controller connections: up to 500

Task processing: Supports 32 tasks, with a maximum of 1000 programs per task, and supports all event triggering

Certification: Complies with CCC, CE, CUL, GOST, KC, MARINE, RCM, UL standards (Specific certification needs to be checked on the product label as the date of manufacture may vary)

Function

High-performance control

1756-L71 is part of the ControlLogix series, specifically designed for high-performance industrial automation, supporting complex control logic and high-speed processing.

It offers a fast scanning time (< 0.08ms), making it suitable for critical mission applications that require rapid response.

Multitasking

It supports up to 32 tasks, with each task capable of running up to 1,000 programs, making it suitable for parallel processing of multiple tasks.

Support event-triggered tasks to facilitate the handling of control logic driven by specific conditions or interrupts.

Communication flexibility

Programming and configuration are achieved through the USB port, supporting multiple industrial communication protocols and adapting to different network environments.

It can be paired with other ControlLogix controllers to achieve controller redundancy and enhance system reliability.

Easy to monitor and diagnose:

It is equipped with a built-in 4-character alphanumeric display screen, providing runtime information and controller diagnosis, facilitating on-site monitoring and troubleshooting.

The SD card stores diagnostic data, facilitating problem analysis by Rockwell Automation. (It is recommended to use the official SD card to avoid data corruption.)

User-friendly programming: Compatible with the RSLogix 5000 (now Studio 5000) software, it supports intuitive insertion of program elements and selection of logical channels, simplifying the programming process without the need for in-depth understanding of PLC registers.

Reliable storage and data protection:

Use capacitive energy storage modules to replace traditional batteries to ensure that the RAM contents are retained when power is cut off.

Support non-volatile storage (SD card) to ensure the long-term preservation of programs and data.

Modularization and scalability

Installed in the ControlLogix rack, it can be seamlessly integrated with other modules (such as I/O modules, communication modules) and support system expansion.

Multiple 1756-L71 controllers can be independently operated in the same rack to build a powerful and scalable control system.

Application scenarios

Manufacturing industry

It is applicable to complex automated tasks, such as production line control, robot control and material handling systems.

It can handle a large number of I/O points and is suitable for managing complex manufacturing processes, such as automotive manufacturing and electronic product assembly.

Process control

It is widely used in scenarios where precise monitoring and control of analog signals are required, such as temperature, pressure and flow control.

Typical applications include process control systems in the chemical, oil and gas, pharmaceutical, and food and beverage industries.

Critical infrastructure

It is used to control and monitor key industrial infrastructure, such as nuclear power plants, power grids and water treatment facilities.

Supports memory forensics through the JTAG interface and is suitable for network security analysis of industrial control systems (ICS).

High reliability environment: Due to its vibration resistance (10-500 Hz), wide temperature range (0-60°C), and high humidity adaptability (5-95% non-condensing), it is suitable for operation in harsh industrial environments, such as heavy machinery or outdoor facilities.

Networked application: Supports multiple communication protocols and is suitable for scenarios that require integration into large-scale networked control systems, such as distributed control systems (DCS) or enterprise-level automation solutions.

Traditional system maintenance: Although 1756-L71 has been discontinued, it still plays a significant role in many existing automation systems and is suitable for maintaining and upgrading outdated ControlLogix systems.

Advantage Products:

All items are Distributor Ready-stock Genuine Brand-new Supplying, please inform us if the other conditions are needed, Used, Open-box, Refurbished, etc.

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