Mitsubishi Electric Q12DCCPU-V - Data Communications Using CPU Shared Memory; CPU Shared Memory Structure; Data Communication Methods Using the CPU Shared Memory; Selection of a Data Communication Method

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13.3 Data Communications Using CPU Shared Memory
13
COMMUNICATIONS BETWEEN CPU MODULES
13.3 Data Communications Using CPU Shared Memory
(1) Data communications using CPU shared memory
The C Controller module can exchange data with CPU modules using the CPU
sh
ared memory.
Use the bus interface functions when creating user programs of the C Controller
module.
The following describes the methods for data communications using the CPU shared
memory.
(a) Data communication methods using the CPU shared memory
There are the following two kinds of the communication methods.
•
Using the auto refresh of programmable controller CPU and Motion CPU
•
Not using the auto refresh of programmable controller CPU
(b) Selection of a data communication method
For data communications using the CPU shared memory, select a method that is
appropriate to the relevant CPU modules.
The following table lists the availability for each type.
: Available, : N/A
(2) CPU shared memory structure
For the structure of the CPU shared memory of the C Controller module, refer to the
follow
ing.
Page 13-14, Section 13.3.1
Table 13.7 Availability for each data communication type
Data communication type
Communication method
Refer to
Using auto refresh
Not using auto
refresh
Programmable controller CPU <-> C Controller
module
Page 13-17, Section 13.3.2,
Page 13-32, Section 13.3.4 (1) (a)
Motion CPU <-> C Controller module Page 13-17, Section 13.3.2
C Controller module <-> C Controller module Page 13-35, Section 13.3.4 (1) (b)
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