Basic Model QCPU Leap Day Bug Technical Bulletin

This technical bulletin describes a date-related bug affecting Mitsubishi Basic model QCPU modules (Q00JCPU, Q00CPU, Q01CPU) where data cannot be written to the PLC on February 29th (leap day) using GX Developer or other tools. It lists the specific operations that trigger the error, such as writing files, online program changes, and FTP transfers, and provides corrective actions including changing the PC or CPU date to a non-leap day.