A-B 1SVR450051R0000 Central control module

Allen-Bradley Processor Modules Overview

Allen-Bradley (A-B), part of Rockwell Automation, offers a wide range of processor modules (CPUs) that are the core of Programmable Logic Controllers (PLCs) or Programmable Automation Controllers (PACs). These modules execute control logic, manage I/O communication, and provide network connectivity. Various series and models are available to suit different performance needs and application scales, such as the CompactLogix, ControlLogix, MicroLogix, and SLC 500 series.

The following describes A-B processor modules from a general perspective. For detailed information on specific models, please refer to the corresponding product manuals.

Product Detailed Description

• Function:

• Executes user-written control programs (e.g., Ladder Diagram, Function Block Diagram, Structured Text, etc.).

• Manages and controls data exchange with I/O modules.

• Provides communication interfaces with supervisory systems, HMIs (Human-Machine Interfaces), and other automation devices.

• Performs diagnostic functions to monitor system status.

• Handles interrupts and events.

• In some advanced models, supports motion control, safety functions, etc.

• Features:

• Multiple performance levels to suit applications of varying complexity.

• Different memory capacities for storing programs and data.

• Integrated with various communication interfaces, such as Ethernet/IP, ControlNet, DeviceNet, serial, etc.

• Modular design for easy integration into different control systems.

• Some models support redundant configurations to enhance system availability.

Product Parameters

Due to the wide variety of A-B processor modules, the following are common parameter types. Please refer to the product manual for specific models for exact values:

• Series:

• E.g., CompactLogix (5380, 5480), ControlLogix (5580), MicroLogix 1400, SLC 5/05, etc.

• Catalog Number:

• E.g., 1769-L33ER, 1756-L81E, 2080-LC50-48QWB.

• Memory Capacity (Program/Data Memory):

• E.g., 512 KB, 1 MB, 5 MB.

• Communication Interfaces:

• E.g., Ethernet/IP (number and type supported), USB, Serial (RS-232/485), ControlNet, DeviceNet.

• Scan Time:

• The time it takes for the processor to execute one complete cycle of the control program.

• I/O Capacity (Number of I/O Points):

• The maximum number of I/O modules and points supported by the processor.

• Programming Languages:

• Supports IEC 61131-3 standard programming languages (Ladder Diagram LD, Function Block Diagram FBD, Sequential Function Chart SFC, Structured Text ST, Instruction List ¹ IL).

   
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• Power Supply:

• E.g., 24V DC.

• Operating Temperature:

• E.g., -25 °C to +70 °C.

• Mounting:

• E.g., DIN rail mounting.

Product Advantages

• High Reliability:

• Designed for industrial environments with high reliability and noise immunity.

• Scalable Performance:

• Offers processors with different performance levels to suit applications of varying scales and complexity.

• Extensive Connectivity:

• Supports various industrial communication protocols for easy integration with other devices.

• Easy Programming and Maintenance:

• Programmed and configured using integrated development environments (IDEs) such as Rockwell's Studio 5000 or Connected Components Workbench.

• Powerful Feature Set:

• Some advanced models support advanced features such as motion control, safety functions, and redundancy.

• Global Support:

• Rockwell Automation provides extensive technical support and services worldwide.

Precautions

• Correct Selection:

• Choose the appropriate processor model based on the specific needs of the application (I/O capacity, performance requirements, communication needs, etc.).

• Correct Installation:

• Follow Rockwell Automation's installation guidelines to ensure the processor module is installed and wired correctly.

• Power Requirements:

• Provide a stable power supply that meets the processor's specifications.

• Environmental Conditions:

• Ensure the operating environment temperature, humidity, etc., meet the processor's specifications.

• Programming Software:

• Requires compatible Rockwell Automation programming software (e.g., Studio 5000, Connected Components Workbench) for program development and configuration.

• Firmware Updates:

• Regularly update the processor firmware to obtain the latest features and security patches.

Product Applications

Allen-Bradley processor modules are widely used in various industrial automation fields, including but not limited to:

• Discrete Manufacturing:

• Automotive manufacturing, electronics assembly, packaging machinery, etc.

• Process Control:

• Chemical, oil and gas, water treatment, etc.

• Motion Control:

• Robotics, servo systems, stepper systems, etc.

• Safety Systems:

• Safety interlocks, emergency stop systems, etc. (requires specific safety processors).

• Infrastructure:

• Traffic control, energy management, etc.

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