Mitsubishi MELSEC Q Series Programming Manual page 906

Program example when the multiple CPU high-speed transmission dedicated instruction is
executed at CPU No.2
SM402
Turn-on for one
scan after RUN
X20
Read instruction
M0 U3E0\G10000.0
During execution CPU No.1 is
of the DDWR during execution
instruction of the instruction
M1
Completion device
(9) Program example when data exceeding 100 words are written/read with the multiple CPU
high-speed transmission dedicated instruction
The maximum number of write/read points that can be processed with the multiple CPU
high-speed transmission dedicated instruction is 100 words. Data exceeding 100 words can
be written/read by executing the multiple CPU high-speed transmission dedicated
instruction at several times.
The following shows a program example using the D(P).DDWR instruction of the multiple
CPU high-speed transmission dedicated instruction. The similar program can be used when
using the D(P).DDRD instruction of the multiple CPU high-speed transmission dedicated
instruction.
10-10
U3E1\G10000.0 is turned on while CPU No.2 is executing the DP.DDRD instruction.
SM796
Number of used
blocks information
(CPU No.1)
DP.DDRD
U3E1\G10000.0 is turned off at the completion of the DP.DDRD instruction.
MOV
MOV
H3E0 D0 D1000
Completion
status
K1 SD796
Maximum number of
used blocks
(CPU No.1)
SET M0
During execution the
DDRD instruction
U3E1\
SET G10000.0
CPU No.2 is during
execution of the
instruction
K50 D1
Read instruction
D1000 M1
Completion
devaice
RST M0
During execution of
the DDRD instruction
U3E1\
RST G10000.0
CPU No.2 is during of
execution the instruction