82
1 FUNCTIONS
1.6 CC-Link IE TSN Network Synchronous Communication Function
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".
• 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".
• When the communication cycle is low speed, synchronization is possible only when "
16" is set. Set "Low-
Speed" in "Communication Period Setting" under "Network Configuration Settings" to "
16".
(1) The communication cycle timing can be checked with '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. (
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
(1)
Inter-module
synchronization cycle
Inter-module synchronous
interrupt program
Operation
processing
CPU module
Network
module
(master station)
Output module
(normal speed)
System
of the
master
station
Input
refresh
Output
refresh
Inter-module
synchronization cycle
Inter-module synchronous
interrupt program
Operation
processing
Input
refresh
Output
refresh
Inter-module
synchronization cycle
Inter-module synchronous
interrupt program
Operation
processing
Input
refresh
Output
refresh
Inter-module
synchronization cycle
Inter-module synchronous
interrupt program
Operation
processing
Input
refresh
Output
refresh
Inter-module
synchronization cycle
Inter-module synchronous
interrupt program
Operation
processing
Input
refresh
Output
refresh
Inter-module
synchronization cycle
Inter-module synchronous
interrupt program
Operation
processing
Input
refresh
Output
refresh
Output refresh
Cyclic transmission
Output value setting
Cyclic transmission
Cyclic transmission
Cycle 4/4
Cycle 1/4
Cycle 2/4
Cycle 3/4
Cycle 4/4
Cycle 1/4
Normal speed
Normal speed
Normal speed
Un\G1277440.0
Un\G1277440.F
Summary of Contents for MELSEC iQ-R CC-Link IE TSN
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Page 323: ...APPX Appendix 10 Added and Enhanced Functions 321 A MEMO ...
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