MELSEC-Q QD51 Intelligent Communication Module Discontinuation Notice

This technical bulletin announces the end of production for the Mitsubishi MELSEC-Q series QD51 and QD51-R24 intelligent communication modules, with final orders accepted through January 31, 2017, and production ceasing on February 28, 2017. It provides alternative models (QJ71C24N-R2 and QJ71C24N), a repair support period until February 29, 2024, and detailed specification comparisons between the discontinued and replacement modules.