ControlLogix / 1756 System
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ControlLogix System Overview
The ControlLogix system provides discrete, drives, motion, process, and safety control together with communication and state-of-the-art I/O in a small, cost-competitive package. The system is modular, so you can design, build, and modify it efficiently - with significant savings in training and engineering.
System Components
ControlLogix system components include:
| Component | Description |
| ControlLogix Controllers | • Options include: ControlLogix standard controllers, GuardLogix safety controllers, and ControlLogix-XT extended temperature controllers. • User memory ranges from 2 to 32 MB, depending on controller type. |
| ControlLogix Communication Modules | • Options include: EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, Foundation Fieldbus, Serial, DH-485, and SynchLink. • Install multiple communication-interface modules into the ControlLogix backplane to configure a gateway to bridge or route control and information data between different networks. |
| ControlLogix Integrated Motion Modules | • Choose from SERCOS or analog interface modules. • A removable terminal block (RTB) is required for analog interface modules only. |
| ControlLogix I/O Modules | • Options include: digital, analog, thermocouple, RTD, motion, and specialty modules. • Densities range from 4 to 32 points per module. • Modules are rate IP20, Class I, Division 2/Zone 2. • Some modules have field-side diagnostics, electronic fusing, or individually isolated inputs/outputs. • A remote terminal block (RTB) or wiring system is required for each I/O module. |
| ControlLogix Power Supplies | • ControlLogix power supplies are used with the 1756 chassis to provide 1.2V, 3.3V, 5V, and 24V DC power directly to the chassis backplane. • Select one power supply for each chassis, if you are using standard power supplies. • Select a power supply bundle if you are planning a redundant power supply system. |
| ControlLogix Chassis | • Choose from ControlLogix standard or ControlLogix-XT chassis. • Standard chassis are available with 4, 7, 10, 13, or 17 slots. • ControlLogix-XT chassis are available with 5 or 7 slots. • Slot fillers are required for empty slots. |
Optional system components include:
| Component | Description |
| Visualization Products | • Visualization products, together with Logix for control and NetLinx architecture for communication, make up the Rockwell Automation Integrated Architecture strategy. • Choose from PanelView Plus and PanelView Plus CE electronic operator interface and Rockwell Automation industrialized personal computer hardware. • Available Rockwell Software supervisory control software includes FactoryTalk View software. |
| Software | • Your selection of modules and network configuration determines what software packages you need to configure and program your system. • Program your ControlLogix system with RSLogix 5000 Enterprise Series software. • Additional design and configuration products include RSNetworx and RSLinx software. |
Standard ControlLogix System
A simple ControlLogix system consists of a standalone controller and I/O modules in a single chassis. For a more comprehensive system, use:
- multiple controllers in a single chassis.
- multiple controllers joined across networks.
- I/O in multiple platforms that is distributed in many locations and connected over multiple I/O links.
Example Configuration—ControlLogix System
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ControlLogix-XT System
The ControlLogix-XT controllers function in the same way as the traditional ControlLogix controllers. The ControlLogix-XT products include control and communication system components that, when used with FLEX I/O-XT products, provide a complete control system solution that can be used in environments where temperatures range from ‑20...70 °C (‑4...158 °F).
When used independently, the ControlLogix-XT system can withstand environments where the temperature ranges from ‑25...70 °C (‑13...158 °F).
GuardLogix Safety System
A GuardLogix controller is a ControlLogix controller that also provides safety control. The GuardLogix system is a dual controller solution — you must use a 1756-L6xS primary controller and a 1756-LSP safety partner to achieve SIL 3 and Cat. 4/PLe. A major benefit of this system is that it’s still a single project, safety and standard together. The safety partner controller is a part of the system, is automatically configured, and requires no user setup.
For additional information see Safety Programmable Controllers, GuardLogix Integrated Safety System .
| Application | Description |
| SIL 3 | The GuardLogix controller system is type-approved and certified for use in safety applications up to and including SIL 3 according to IEC 61508, and applications up to and including category (CAT) 4, according to EN954-1. For more information, see: • GuardLogix Controllers Systems Safety Reference Manual, publication 1756-RM093. • GuardLogix Controllers User Manual, publication 1756-UM020. • GuardLogix Safety Application Instruction Set Reference Manual, publication 1756-RM095. |
| SIL 2 | Components of the ControlLogix system are type-approved and certified for use in SIL 2 applications, according to IEC 61508, and AK4 applications according to DIN V19250. For a list of ControlLogix system components that meet SIL 2 requirements, see Using ControlLogix in SIL 2 Applications Safety Reference Manual, publication 1756-RM001. |
Example Configuration—ControlLogix System
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Redundant ControlLogix System
The ControlLogix controller supports redundancy.
Example Configuration—Redundant ControlLogix System
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