MITSUBISHI ELECTRIC Mitsubishi Programmable Logic Controller QD75D - Manual (Page 265)

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Chapter 7 Memory Configuration and Data
Process
The QD75 memory configuration and data transmission are explained in this chapter.
The QD75 is configured of two memories. By understanding the configuration and
roles of two memories, the QD75 internal data transmission process, such as "when
the power is turned ON" or "when the PLC READY signal changes from OFF to ON"
can be easily understood. This also allows the transmission process to be carried out
correctly when saving or changing the data.
7.1 Configuration and roles of QD75 memory...................................................................7- 2
7.1.1 Configuration and roles of QD75 memory .....................................................7- 2
7.1.2 Buffer memory area configuration..................................................................7- 5
7.2 Data transmission process...........................................................................................7- 6