MELSEC-Q Series QCPU Production Discontinuation Notice

This technical bulletin announces the production discontinuation of specific MELSEC-Q series PLC models (High Performance QCPU, Basic QCPU, and QCPU-A) due to obsolete parts, with final order acceptance through August 31, 2018, and repair support until September 30, 2025. It provides a detailed list of discontinued models, their recommended alternative models (such as the High-speed Universal model QCPU and Universal model QCPU), and notes on required program modifications, cable adapters, and memory card changes for replacement.