Mitsubishi Electric Q06CCPU-V, Руководство пользователя

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13
COMMUNICATIONS BETWEEN CPU MODULES
13.3 Data Communications Using CPU Shared Memory
13.3.4 Data communications without using auto refresh
13
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DE
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CRIPT
IO
N
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MU
LT
IPL
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CP
U SY
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EM
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MUL
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IP
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CP
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CONFIGURA
TION
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CONCE
PT
OF MU
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IPL
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CP
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COMMUN
ICA
TIO
N
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BE
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CP
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MODUL
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P
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RAM
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TR
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B
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HOOTING
(b) Between C Controller modules
Figure 13.24 Communications without using auto refresh
CPU shared memory
Host CPU operation information area
System area
Auto refresh area
Data written by QBF_ToBuf function
of C Controller module 1)
(User setting area)
1. Write by QBF_ToBuf function
of C Controller module 1)
User program
Execution of QBF_ToBuf function
Execution of QBF_FromBuf function
C Controller module 1)
Host CPU operation information area
System area
Auto refresh area
Data written by QBF_ToBuf function
of C Controller module 2)
(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 2)
C Controller module 2)
3. Read by QBF_FromBuf
function of C Controller
module 2)
4. Read by QBF_FromBuf
function of C Controller
module 1)
At bus interface function execution of C Controller module 1)
QBF_ToBuf function execution writes the data to the user setting area
in the CPU shared memory of C Controller module 1).
QBF_FromBuf function execution reads out the user setting area data
of C Controller module 2) onto the user program.
1.
4.
At bus interface function execution of C Controller module 2)
QBF_ToBuf function execution writes the data to the user setting area
in the CPU shared memory of C Controller module 2).
QBF_FromBuf function execution reads out the user setting area data
of C Controller module 1) onto the user program.
2.
3.