Description
A-B 1756-L73 processor controller module

1756-L73
The ROCKWELL 1756-L73 is purpose-built for applications across a wide spectrum of industries, including automotive manufacturing, chemical processing, and energy production. In automotive plants, it orchestrates the intricate movements of robotic arms on assembly lines, ensuring precise part placement and welding. In chemical facilities, it monitors and controls critical processes, preventing hazardous situations by detecting and responding to abnormal conditions in real-time. With its advanced safety features and high-performance capabilities, the 1756-L73 integrates effortlessly into existing industrial ecosystems, working in tandem with distributed control systems (DCS), supervisory control and data acquisition (SCADA) systems, and other automation components. This makes it an indispensable asset for businesses aiming to enhance productivity, minimize downtime, and ensure compliance with safety standards.
Label |
Specification |
Model Number |
1756-L73 |
Brand |
ROCKWELL |
Type |
Programmable Automation Controller (PAC), ControlLogix series |
Processor |
1.5 GHz PowerPC™ CPU |
Memory |
30 MB user program memory, 60 MB data memory |
Input Voltage |
Powered by ControlLogix backplane (24 VDC) |
Communication |
Supports EtherNet/IP, ControlNet, DeviceNet (with additional modules) |
I/O Capacity |
Can support up to 256 I/O modules |
Operating Temp |
0°C – 60°C (32°F – 140°F) |
Dimensions |
171.45 mm (H) x 44.45 mm (W) x 111.125 mm (D) |
Certifications |
CE, UL, cUL, ATEX (hazardous area compliance), SIL 3 – compliant |
Safety Features |
Built-in CIP Safety™ technology for integrated safety control |
Redundancy |
Optional dual controller redundancy for enhanced reliability |
Programming Language |
Rockwell Studio 5000 (Ladder Logic, Structured Text, Function Block Diagram) |

1756-L73
The ROCKWELL 1756-L73 stands out for its exceptional functional prowess and robust design. At its heart lies a powerful 1.5 GHz PowerPC™ CPU, which delivers lightning-fast processing speeds, allowing it to execute complex control algorithms and handle large volumes of data in real-time. Coupled with its generous 30 MB of user program memory and 60 MB of data memory, the 1756-L73 can store extensive control logic and historical data, enabling advanced analytics and predictive maintenance strategies.
One of the most notable features of the 1756-L73 is its built-in CIP Safety™ technology. This advanced safety functionality integrates safety control directly into the controller, eliminating the need for separate safety PLCs in many applications. By combining standard control and safety functions within a single device, it simplifies system design, reduces wiring complexity, and lowers overall costs. The controller’s SIL 3 compliance ensures that it meets the highest safety integrity levels, providing peace of mind in hazardous industrial environments.

1756-L73
The
1756-L73 also offers remarkable communication flexibility. With support for multiple industrial communication protocols like EtherNet/IP, ControlNet, and DeviceNet, it can seamlessly interface with a vast array of devices, from sensors and actuators to HMIs and other controllers. This interoperability allows for easy expansion and integration of automation systems, making it adaptable to evolving industrial needs. Additionally, the option for dual controller redundancy enhances system reliability, ensuring continuous operation even in the event of a controller failure. The controller’s rugged design, capable of withstanding harsh industrial conditions such as temperature fluctuations, vibrations, and electrical interference, further cements its status as a reliable workhorse in industrial automation.
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