Mitsubishi MELSEC-Q Series User Manual page 163

4
COMMUNICATIONS BETWEEN CPU MODULES
4) The area occupied for auto refresh in the CPU shared memory is a total of
Setting 1 to 4.
When send points are set, the first and last addresses of the auto refresh area
are automatically displayed as hexadecimal offset values.
For example, the CPU that has send point setting in Setting 1 and 2 has the
last address of "the first address of the auto refresh area + offset value of
Setting 2". (In Diagram 4.10, up to "the first address of the auto refresh area +
11 " are set for CPU No. 1 and 2, and "the first address of the auto refresh
H
area + 21 " is set for CPU No. 4.)
H
When a CPU has setting in Setting 1 only, the last address in Setting 1 is the
one of the CPU's auto refresh area.
Diagram 4.10 Display of auto refresh area address
4.1 Communications between CPU modules using CPU shared memory
4.1.2 Communication by auto refresh using CPU shared memory
Final address of CPU shared memory for each CPU
1
2
3
Transmission
range of CPU
No. 1
4
Final address
of CPU device
5
6
7
8
4
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