Mitsubishi MELSEC-Q Series User Manual page 162

4
COMMUNICATIONS BETWEEN CPU MODULES
Basic model QCPU 320 points
Motion CPU 2048 points
PC CPU module 2048 points
4416 points for all CPU modules
(4416 words)
Setting units of 2 points (2 words)
2k points (2k words) per
module
8k points (8k words) for
all CPUs
Setting units of 2 points
(2 words)
4
- 12 4.1 Communications between CPU modules using CPU shared memory
4.1.2 Communication by auto refresh using CPU shared memory
3) The number of send points is as follows:
• For Basic model QCPU
The numbers of send points are 320 words for the Basic model QCPU and
2048 words for the Motion CPU/PC CPU module, making a total of 4416
points (4416 words) for all CPU modules.
Diagram 4.7 Setting of send points
• For High Performance model QCPU or Process CPU, or Universal model
QCPU
The number of send points is a maximum of 2 k points (2 k words) for a
total of four ranges for each CPU module, making a total of 8 k points (8 k
words) for all CPUs.
Diagram 4.8 Setting of send points
[Processing of auto refresh]
B0
to
B1F
B20
to
B3F
Since CPU No. 3 has 0 point, it is not refreshed.
Since CPU No. 3 and 4 have 0 point, it is not refreshed.
CPU No. 1
Device
Diagram 4.9 Outline of auto refresh processing
(between CPU No. 1 and No. 2)
When the CPU shared
memory is set to 2
points and the bit
device is specified on
the CPU device, the
number of the bit device
points is 32.
When the CPU shared
memory is set at 2 points
and the bit device is
specified on the CPU
device, the number of the
bit device points is 32
points.
CPU No. 2
Device
B0
to
B1F
B20
to
B3F