Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 42

If setting inter-module synchronization settings at the Motion CPU, set as follows.
Operating procedure
The operating status of the inter-module synchronization function for each module can be checked with the GX Works3
system monitor function.
Inter-module synchronization target refresh settings
Refresh settings are not required for modules controlled by Motion CPUs. I/O (X/Y) refresh is performed for all modules
controlled by Motion CPU control. Also, perform read to and write from the module buffer memory by direct access with a
module access device (U\G).
1 MULTIPLE CPU SYSTEM
40
1.3 Data Communication Between CPU Modules in the Multiple CPU System
1.
Set "Use inter-module synchronization function in
system" to "Use".
2.
Set "Synchronize" from the setting of the selected
synchronization target module displayed in "Select the
synchronous target unit", for the module to be
synchronized.
3.
Set the "Inter-module synchronization target module
selection" as follows.
• Set "0.05ms unit setting" to "Not set".
• Set the following fixed scan interval compatible with the
Motion CPU in "Fixed scan interval setting (not set by
0.05ms)".
(0.222ms, 0.444ms, 0.888ms, 1.777ms, 3.555ms,
*1
7.111ms)
*1 If a fixed scan interval other than the above that is not
compatible with the Motion CPU is set, a moderate error (error
code: 2222H) occurs when the Multiple CPU system power
supply is turned ON.