MOD 300 CCF Library for AC 800M

This document describes the MOD 300 CCF Library (MOD300CCFLIB) for the AC 800M control system, which protects investment in legacy MOD 300 control applications by enabling incremental evolution to the AC 800M platform. The library provides 1-for-1 function block mapping, re-engineered algorithms for IEC 61131-3, and maintains operator "look & feel" through 800xA faceplates, minimizing engineering training and project risks compared to traditional "rip and replace" upgrades.