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Bulletin 1756 ControlLogix Programmable Automation Control System

ControlLogix Control System

ControlLogix® systems use a common control engine with a common development environment to provide high performance in an easy-to-use environment. Tight integration between the programming software, controller, and I/O modules reduces development time and cost at commissioning and during normal operation. You can perform standard and safety control in the same chassis for a truly integrated system. Leverage the high-availability and extreme environment capabilities to meet your application needs.

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  • Provides premier high-speed, high-performance, multi-disciplined application control
  • Provides fully redundant controller architecture with bumpless switchover and high availability
  • Provides modular and scalable network communications
  • Offers broadcast range of communication and I/O options
  • Provides time-synchronization capabilities for first fault, process sequencing and other applications
  • Offers select products that are TÜV-certified for use in SIL 2 and SIL 3applications

Additional Information

Our Integrated Architecture Solutions provide the foundation to drive plantwide optimization efficiently and effectively, enabling you to respond competitively to the economy and changes in consumer demand.

1756 ControlLogix Extreme Environment Controllers

Bulletin 1756 ControlLogix-XT™ Extreme Environment Controllers function in the same way and offer the same features as the ControlLogix Standard Controllers. The XT controllers leverage the Rockwell Automation® Integrated Archi­tecture™ control engine with enhancements to meet the needs of extreme environment applications, including conformal coating that extends product life in harsh, corrosive environments. In addition, an XT control system spaces modules in every other slot for thermal cushion and offers redesigned ventilation for increased air flow.

1756 ControlLogix I/O

Bulletin 1756 ControlLogix® I/O modules provide a full range of digital, diagnostic digital, analog, motion control, and specialty I/O to meet your application needs. You can use any of the I/O modules in the local chassis of a ControlLogix controller or in a chassis linked to a ControlLogix controller across ControlNet™ or EtherNet/IP™ networks.

1756 ControlLogix Standard Controllers

Bulletin 1756 ControlLogix® Standard Controllers are suitable for process, motion, discrete, and high-availability applications. As part of the Rockwell Automation® Integrated Architecture™ system, these controllers use RSLogix™ 5000 programming software (L6 models), the Studio 5000™ environment (L7 models), and common network protocols. They offer common information capabilities. These high-performance controllers provide a common control engine with a common development environment for all control disciplines. Consider these controllers for more sophisticated machines and for connectivity to business systems.

1756 GuardLogix Safety Controllers

Bulletin 1756 GuardLogix® Safety Controllers have a two-processor architecture (1oo2) and are suitable for SIL 3 PLe applications. As part of the Rockwell Automation® Integrated Architecture™ system, these controllers use RSLogix™ 5000 programming software (L6 models) and the Studio 5000™ environment (L7 models). They offer common information capabilities and support CIP Safety over EtherNet/IP™ and ControlNet™ networks. These high-performance controllers provide a common control engine with a common development environment for all control disciplines. Consider these controllers for more sophisticated machines and for connectivity to business systems.


Modular ControlLogix® and GuardLogix® systems require Bulletin 1756 I/O Chassis. These chassis are designed for horizontal-only, back-panel mounting. You can place any module into any slot. The backplane provides a high-speed communication path between modules. Available in standard and extreme environment models.


The ControlLogix® Communication Modules support EtherNet/IP™, ControlNet™, DeviceNet™, Data Highway Plus™, Remote I/O, Foundation Fieldbus, serial, DH-485 and SynchLink™ networks. Interface using ControlLogix communication modules via a ControlLogix gateway (without a controller in the gateway chassis), or interface directly to a ControlLogix controller. ControlLogix extreme environment communication modules are available for EtherNet/IP, ControlNet, Data Highway Plus and Remote I/O networks.


ControlLogix® systems offer Integrated Motion with support for Kinetix® and PowerFlex® drives on EtherNet/IP™ networks, and for Kinetix drives on Sercos™ interface. Select from a range of EtherNet/IP and Sercos interface module options with support for as many as 128 drives per EtherNet/IP module and as many as 16 drives per Sercos module. Analog interface modules are available for drives and actuators with analog interfaces.

Power Supplies

Use the Bulletin 1756 ControlLogix® Power Supplies with the 1756 ControlLogix chassis to provide 1.2V, 3.3V, 5V and 24V DC power directly to the chassis backplane. These power supplies are available in standard, redundant and extreme environment models.

Redundancy Modules

Bulletin 1756 ControlLogix® Redundancy Modules support fully redundant controller architectures with no additional programming required. Programs are cross-loaded automatically from the primary to the secondary controller. The primary automatically updates the secondary with data changes to maintain controller synchronization. If the primary fails, control switches to the secondary automatically, and highest priority functions are guaranteed a ‘bumpless transfer.' Controller redundancy is transparent to any devices connected over an EtherNet/IP™ or ControlNet™ network. Select the ControlLogix extreme environment redundancy module for applications that must run in extreme environments


Use RSLogix 5000 programming software (L6 models) or the Studio 5000 Logix Designer software (L7 models) from Rockwell Software® to design and configure your ControlLogix® or GuardLogix® system.

The controllers and modules you select, along with your network configuration, determine what additional software packages you need to configure and program your system. Additional required software may include RSNetWorx configuration software and RSLinx communication software

Learn More

Additional software products are available from Rockwell Software.


Integrated Architecture BrochureIA-BR006
Safety Capabilities BrochureSAFETY-BR011
ControlLogix Programmable Automation Controllers Product Profile1756-PP015
ControlLogix Redundancy Product Profile1756-PP017
GuardLogix Integrated Safety Controller Product Profile1756-PP009
Conformal Coating Product ProfileIA-PP001
ControlLogix Selection Guide1756-SG001
ControlLogix System User Manual1756-UM001
ControlLogix Enhanced Redundancy System User Manual1756-UM535
Logix5000 Controllers Common Procedures Programming Manual1756-PM001
Logix5000 Controllers Design Considerations Reference Manual1756-RM094
GuardLogix Controller Systems Safety Reference Manual1756-RM093
GuardLogix Safety Application Instruction Set Safety Reference Manual1756-RM095
More ControlLogix publications in Literature LibraryAll Languages

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Product Certifications

See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Configuration & Selection Tools

Other Resources

  • Drives and Motion Accelerator Toolkit — Use selection tools, layout & wiring drawings, and HMI files to design, install, operate, and maintain a Rockwell Automation® drive system.
  • EtherNet/IP Capacity Tool — Calculate resources used by a proposed EtherNet/IP™ network.
  • Firmware Updates — Log in to get support for firmware updates.
  • Logix Designer Start Page — Use these videos (formerly RSLogix™ 5000 Start Pages) to quickly learn important tasks in Studio 5000™ Logix Designer application.
  • PLC-5/SLC Interactive Migration Tool — Migrate your PLC-5 or SLC system to a Logix-based solution using products such as the I/O Wiring Conversion System.
  • Software Updates — Log in to get support for software updates.
  • Knowledgebase — Visit our online resource for technical information, support chat and forums, software updates, and product safety advisories/notices.


Our ControlLogix® controllers offer the memory, speed, and processing capabilities to meet the demands of basic plant floor applications to high-performance process and motion applications.

For process applications, these controllers:

  • offer increased capacity, letting you execute more control strategies in each task
  • significantly improve the amount of information to be exchanged between control and supervisory layers
  • offer a significant improvement in the performance of redundant control applications

For motion applications, these controllers:

  • provide high-speed motion command and axis trajectory planner execution for complex, high-performance motion applications
  • are optimized for control of high performance motion drives on EtherNet/IP™ or Sercos™ interface
  • support as many as 100 axes of integrated motion

For discrete applications, these controllers:

  • significantly improve controller scan times using a faster dual-core CPU
  • offer improved communication rates
  • provide faster cross-loading for redundancy systems

Customer Success