MELSEC-Q Series MELSECNET/H Modules Discontinuation Notice

This technical bulletin announces the discontinuation of several MELSECNET/H modules for the MELSEC-Q series, including optical (SI/GI) loop, coaxial bus, and twisted bus types, with production ceasing between 2028 and 2029. It provides discontinuation schedules, repair support periods until 2035-2036, and lists alternative models such as the MELSEC iQ-R series RJ71LP21-25 or CC-Link IE Controller Network modules.