Mitsubishi Electric Q06CCPU-V, Руководство пользователя

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13
- 32 13.3 Data Communications Using CPU Shared Memory
13.3.4 Data communications without using auto refresh
13
COMMUNICATIONS BETWEEN CPU MODULES
13.3.4 Data communications without using auto refresh
This section explains processing outline of data communications in the CPU shared
memory without using auto refresh of the programmable controller CPU.
(1) Data communications without using auto refresh
When auto refresh is not used, data are communicated as described below.
(a) Between programmable controller CPU and C Controller module
Remark
Figure 13.22 shows an operation example of using the S.TO and FROM
instructions on a High Performance model CPU.
For operations on the programmable controller CPU side when not using auto
refresh, refer to the manual for the relevant CPU module.
Figure 13.22 Processing of communication without using auto refresh
Q12DCCPU-V Q06CCPU-V Q06CCPU-V-B
CPU shared memory
Host CPU operation information area
System area
Auto refresh area
Data written by S.TO instruction
(User setting area)
1. Write by S.TO instruction of programmable
controller CPU
Sequence program
Execution of S.TO instruction
Execution of FROM instruction
Programmable controller CPU
Host CPU operation information area
System area
Auto refresh area
Data written by QBF_ToBuf function
(User setting area)
CPU shared memory
User program
Execution of QBF_FromBuf function
Execution of QBF_ToBuf function
2. Write by QBF_ToBuf function
of C Controller module
C Controller module
3. Read by QBF_FromBuf
function of C Controller module
4. Read by FROM
instruction of programmable
controller CPU
When executing sequence program of programmable controller CPU
By the S.TO instruction, the data are written to the user setting area
in the CPU shared memory of the programmable controller CPU.
By the FROM instruction, the data are read out to the specified device
in the programmable controller CPU.
1.
4.
At bus interface function execution of C Controller module
QBF_ToBuf function execution writes the data to the user setting area
in the C Controller module's CPU shared memory.
QBF_FromBuf function execution reads out the user setting area data
of the programmable controller CPU onto the user program.
2.
3.