7 - 1
7
Chapter 7 Memory Configuration and Data
Process
The QD75 memory configuration and data transm ission are explained in this chapter.
The QD75 is configured of two memories. By un derstanding the configuration and
roles of two memories, the QD75 internal data transmis sion 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