Mitsubishi MELSEC-Q Series User Manual page 179

4
COMMUNICATIONS BETWEEN CPU MODULES
POINT
Table4.8 List of parameter setting/display item for CPU specific send range setting
Item
CPU specific send Sets the number of points of data that each CPU module
range sends.
The system area is used for "dedicated instructions"
Restricted system
Set the number of points for a system area to be assigned for
area
each CPU module.
Displays the total of number of points of the host CPU send
Total area and the restricted system area that are allocated to the
each CPU module.
4.1.3 Communication by auto refresh using multiple CPU high speed transmission area
Selecting "Advanced settings" enables to change the number of points in
Restricted system area used for dedicated instructions to 2 k points.
Changing the number of points in system area to 2 k enables to increase the
number of dedicated instructions can be executed concurrently in a scan.
The following shows the setting screen and setting range of the case where
"Advanced settings" is selected.
Diagram 4.27 CPU specific send range setting screen
Setting description
* 1: Sets the total of all CPUs to be the following point or lower.
When constituted with two CPUs: 14k points
When constituted with three CPUs: 13k points
When constituted with four CPUs: 12k points
* 2: Sets the total of all CPUs to be 16.0k points or lower.
* 3: For "dedicated instructions", refer to the manual of the Motion CPU.
4.1 Communications between CPU modules using CPU shared memory
Setting/display value
Setting range: 0 to 14k points
Setting unit: 1k point
*3
Setting range: 1k point to 2k point
Setting range: 1 to 16k points
Setting unit: 1k point
1
2
3
4
*1
5
*2
*7
6
7
8
4
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