Allen-Bradley 1771-CX1 is a digital I/O module for the SLC 500 PLC system. This module expands a controller’s ability to read and drive digital signals within an Allen-Bradley SLC 500 installation. It is the 1771-CX1 model and is used to add digital input/output channels to legacy automation setups where SLC 500 remains in operation. Typical applications include machine control and process monitoring that rely on digital signaling within an existing SLC 500 framework.
