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MELSEC-Q Process CPU Replacement with Universal Model Process CPU Technical Bulletin

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This technical bulletin provides instructions and precautions for replacing Mitsubishi Electric MELSEC-Q series Process CPUs (Q02PHCPU, Q06PHCPU, Q12PHCPU, Q25PHCPU) with Universal model Process CPUs (Q04UDPVCPU, Q06UDPVCPU, Q13UDPVCPU, Q26UDPVCPU). It covers system configuration changes, program modifications, and compatibility issues related to ports, software, instructions, floating-point operations, device ranges, and special relays.

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