Mitsubishi Electric MELSEC Q Series User Manual page 262

(3) Example of continuous data transmission from CPU No. 1 to No. 2
Auto refresh devices used in CPU No. 1
D10 to D18
For handshake in CPU Nos. 1 and 2, refer to Section 4.1.2.
Program example
Program by which data are continuously stored from CPU No. 1 to CPU No. 2
CPU No. 1
SM400
Always
CPU No.1
transmission
ON
flag
CPU No.2
reception
completed
CPU No. 2
CPU No.1
transmission
flag
Figure 8.22 Program example for storing data continuously from CPU No. 1 to CPU No. 2
CHAPTER8 STARTING UP THE MULTIPLE CPU SYSTEM
Table8.5 Auto refresh devices used in each module
D10 to D18
M40
Auto refresh devices used in CPU No. 2
Transmission CPU No.1
head data transmission
data
CPU No.1 CPU No.2
transmission reception
data data
1
2
3
4
5
6
Transmission
head data
7
Transmission
final data
8
CPU No.1
transmission
flag
CPU No.1
transmission
flag
CPU No.2
reception
completed
8 - 37