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CHAPTER 6 COMMUNICATIONS AMONG CPU MODULES
6
6.1 Communications Using the CPU Shared Memory
6.1.1 Communications by auto refresh (using the auto refresh area)
Ex.
Disabling unnecessary refresh
Unnecessary refresh can set to be disabled by not setting the device ranges of other CPU modules where
auto refresh is not required. The device ranges of the host CPU module must be set.
The following is a setting example of auto refresh between CPU No.1 and each of other CPU modules
(CPU No.2 to No.4).
Setting of CPU No.1
Setting of CPU No.3 Setting of CPU No.4
Setting of CPU No.2
CPU No.2
Device
D0
D9
D100
to
to
D109
D0
D9
D100
to
to
D109
D0
D9
D100
to
to
D109
Device
CPU No.3
D20
D29
D100
D109
Device
D0
D9
Device
CPU No.4
D10
to
to
to
to
D19
CPU No.1