The Allen-Bradley 1756-L1 is a ControlLogix controller module from Rockwell Automation’s modular Programmable Automation Controller (PAC) platform.
It provides 2 MB of memory and includes an integrated RS-232 serial communication port for data exchange and device interfacing.
As part of the first-generation ControlLogix controllers, the 1756-L1 supports up to 128,000 discrete I/O and 4,000 analog I/O points, offering flexible and scalable control for industrial applications.
This module is designed for use within ControlLogix chassis systems, making it suitable for machine control, process automation, and distributed control networks.