Mitsubishi Electric MELSEC iQ-R Series - Another CPU Module Access Instructions; Chapter 12 Multiple Cpu Dedicated Instructions

12 MULTIPLE CPU DEDICATED INSTRUCTIONS
12.1 Another CPU Module Access Instructions
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12 MULTIPLE CPU DEDICATED INSTRUCTIONS
12.1 Another CPU Module Access Instructions
Overview
The host CPU module read or write device data from or to another CPU module by using another CPU module access
instructions.
The following figure shows the operation for writing data from CPU No.1 to CPU No.2 by using another CPU module access
instruction.
The following table lists another CPU module access instructions.
Setting parameters
To use the D(P).DDRD or D(P).DDWR instruction, the fixed scan communication function of the system parameters needs to
be set.
Instruction
symbol
Description Application
D(P).DDRD Loads the device data of another CPU module to the device of the host CPU module. Use these instructions to read or write data
at the timing set by the fixed scan
communication function.
D(P).DDWR Writes the device data of the host CPU module to the device of another CPU module.
M(P).DDRD Loads the device data of another CPU module to the device of the host CPU module. Use these instructions to read or write data
at the timing of each CPU module.
M(P).DDWR Writes the device data of the host CPU module to the device of another CPU module.
MP.DDWR
H3E1 D0 M0D100
"D200"
D100
D0
D200
D0
PW CPU CPU