Mitsubishi Electric MELSEC iQ-R Series User Manual page 208

Network synchronous communication with multiple cycles
When slave stations with different communication cycles (excluding local stations) coexists, cyclic transmission between
stations is performed according to the communication cycle. For the cyclic transmission of the master station and a remote
station, data can be transmitted to other stations after two cycles.
The following figure shows the cyclic transmission timing when "Communication Period Setting" in "Network Configuration
Settings" is set to "Normal-Speed".
CPU module
System of
the master
station
Network
module
(master station)
Output module
(normal speed)
Un\G1277440.0
(1)
Un\G1277440.F
(1) The communication cycle timing can be checked with the 'Communication cycle timing' (Un\G1277440 to Un\G1277441) of the buffer memory. The timing of
data refreshed in the CPU module can also be checked with this buffer memory area. The 0th bit in this buffer memory area is turned on during the first (1/
4) cycle for normal speed. In addition, the 15th bit in this buffer memory area is turned on during the last (4/4) cycle for normal speed. ( Page 474
Communication cycle timing)
To perform network synchronous communication when multiple cycles coexist, set the setting of the local
station to "Basic Period" for "Communication Period Setting" in "Network Configuration Settings".
9 FUNCTIONS
206
9.7 CC-Link IE TSN Network Synchronous Communication Function
Normal speed
Cycle 4/4 Cycle 1/4
Inter-module Inter-module
synchronization cycle synchronization cycle
Inter-module synchronous Inter-module synchronous
interrupt program interrupt program
Input Operation Output Input Operation
refresh processing refresh refresh processing
Output refresh
ON
OFF
ON
OFF
Normal speed
Cycle 2/4 Cycle 3/4
Inter-module Inter-module
synchronization cycle synchronization cycle
Inter-module synchronous Inter-module synchronous
interrupt program interrupt program
Output Input Operation Output Input
refresh refresh processing refresh refresh
Cyclic transmission
Cyclic transmission
Cyclic transmission
OFF
OFF
Cycle 4/4
Inter-module
synchronization cycle
Inter-module synchronous
interrupt program
Operation Output Input Operation Output
processing refresh refresh processing refresh
ON
Normal speed
Cycle 1/4
Inter-module
synchronization cycle
Inter-module synchronous
interrupt program
Input Operation Output
refresh processing refresh
Output value setting
ON
ON
OFF
OFF