Mitsubishi Electric MELSEC iQ-R Series User Manual page 81

Setting method
In "Network Configuration Settings" under "Basic Settings" of the module parameter, set "Network Synchronous
Communication" of the device station to enable the network synchronous communication to "Synchronous".
In addition, when the network synchronous communication of a standard station is enabled, the inter-module synchronization
function needs to be enabled as well.
For the setting method of the inter-module synchronization function, refer to the following manual.
MELSEC iQ-R Inter-Module Synchronization Function Reference Manual
■ Inter-module synchronization cycle
To use the inter-module synchronization function, set the same cycle for the following two items.
• "Fixed Scan Interval Setting" under "Inter-module Synchronization Setting" of the system parameter
• "Communication Period Interval Setting" under "Basic Settings" of the module parameter
Set the cycle in the following range.
Control mode
PLCopen Motion control FB mode
Simple Motion mode
■ How to calculate an inter-module synchronization cycle
For the cycle to be set, set a value greater than a value obtained by one of the following formulas.
Condition
Execution time of the inter-module synchronous interrupt program (I44) >
Cyclic transmission time
Execution time of inter-module synchronous interrupt program (I44)  Cyclic
transmission time
*1 For the values obtained by the calculation formulas, refer to the following.
Execution time of the inter-module synchronous interrupt program (I44) (User's manual of the CPU module used)
Cyclic transmission time and cyclic processing time (Page 275 Communication cycle interval)
Precautions
To use the inter-module synchronization function, do not set "Not Set" for "0.05ms Unit Setting" of "Fixed Scan Interval Setting
of Inter-module Synchronization" in "System Parameter".
None of the inter-module synchronization cycles 0.222 ms, 0.444 ms, 0.888 ms, 1.777 ms, 3.555 ms, and 7.111 ms can be
used by the CC-Link IE TSN network synchronous communication function. Therefore, neither the SSCNET III/H supported
Simple Motion module nor Motion CPU can synchronize with the inter-module synchronization cycle.
Fixed Scan Interval/Communication Period Interval
0.25/0.50/1.00/2.00/4.00/8.00 ms
0.25/0.50/1.00/2.00/4.00 ms
Calculation formula
Execution time of the inter-module synchronous interrupt program (I44) +
Cyclic processing time
Cyclic transmission time + Cyclic processing time
1.6 CC-Link IE TSN Network Synchronous Communication Function
*1
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