MELSEC-K/A/QnA Series CPU Modules Y2K Technical Bulletin

This technical bulletin addresses the Year 2000 (Y2K) problem for Mitsubishi MELSEC-K/A/QnA Series PLC CPU modules with clock functions, detailing automatic leap year compensation and the need for program adjustments when processing two-digit year data. It specifies which CPU models are affected, explains that years after 2000 may be misinterpreted as earlier than 1999 due to two-digit year handling, and provides conversion methods and references to related bulletins for detailed problem examples and solutions.