1756-L55M22 Product datasheet    

1756-L55M22 Functional Description    

The Allen-Bradley 1756-L55M22 is a powerful ControlLogix Controller in the Logix5000 series, designed for efficient industrial automation. With 750 KB of data and logic memory, along with 208 KB dedicated to I/O memory, it delivers high-performance processing and control. The 1756-L55M22 has a unique dual-CPU architecture, featuring both a Logix CPU for running application code and a backplane CPU responsible for managing communication with the I/O systems. This design ensures the system can efficiently execute complex tasks while handling communication duties simultaneously.

Communication is flexible with the 1756-L55M22 Powerful Processor Module; it connects to workstations and other controllers via a serial port using the 1756-CP3 serial cable. It also supports multiple network protocols, including Ethernet/IP, ControlNet, and DeviceNet, allowing seamless communication with other devices and systems. Additionally, the controller supports producing and consuming system-shared tags over EtherNet/IP or ControlNet, ensuring easy integration within large-scale industrial networks. For multitasking, the 1756-L55M22 allows the allocation of processing time across various application operations, enhancing efficiency in complex processes.

In case of I/O issues, the 1756-L55M22 Series A ControlLogix 5555 controller features an I/O LED that flashes green to signal potential problems, while its built-in fault handler provides detailed diagnostics for troubleshooting. This controller also supports regular maintenance with its 1756-BA1 or 1756-BATM battery options, ensuring long-term reliability. Overall, the 1756-L55M22 is a versatile and robust solution for industrial control applications, combining advanced memory capabilities, multitasking, and seamless connectivity.