The Allen-Bradley 1745-C2 IO System Interface Module is a dedicated interface module in the 1745 Point I/O family that links a controller to 1745 I/O modules. Designed for use within Rockwell Automation architectures, it provides the signaling and addressing pathway that enables expansion of discrete I/O in legacy SLC 500/ PLC-5 environments. Catalog number 1745-C2 identifies the module within the 1745 system, and it is used when integrating additional 1745 I/O blocks to achieve scalable automation. It offers compatibility with the 1745 Point I/O backplane and supports the module-to-backplane communication protocols used by Allen-Bradley 1745 modules.
