680
9.2
Reading from the CPU Shared Memory of another CPU
The FROM(P)/DFRO(P) instruction of Multiple CPU system can be read from the following memories.
• Buffer memory of intelligent function module
• CPU shared memory of other CPU module
• CPU shared memory of host CPU module (applicable for the Basic model QCPU and Universal model QCPU)
The following figure shows the processing performed when the FROM(P) instruction is executed in CPU No. 1.
*1:
Applicable for the Basic model QCPU and Universal model QCPU
Remark
Refer to Page 426, Section 7.8.1 for reading the buffer memory of the intelligent function module with the FROM/DFRO
instruction.
Designation of CP
U
shared memory of CP
U
No. 2
[ FROM H3E1 n1 n2 D n3]
Reads data
*1
Designation of CP
U
shared memory of CP
U
No. 1
Designation of intelligent function module
[ FROM H3E0 n1 n2 D n3]
[ FROM H0 n1 n2 D n3]
De
v
ice
memory
CP
U
shared
memory
De
v
ice
memory
Buffer
memory
CP
U
shared
memory
CP
U
No. 1
CP
U
No. 2
Intelligent
function module
Data
read
Data read
