Mitsubishi Electric MELSEC iQ-R Series User Manual page 37

• When "Communication Mode" is set to "Multicast" and "Communication Speed" of the master station is set to "1Gbps",
communication may not be possible depending on the type of the device if slave stations with different communication
speeds of 1Gbps and 100Mbps coexist on the end side via the switching hub. The communication will be enabled by
configuring settings with the TSN hub so that the multicast frame (with multicast MAC address 09:00:70:00:10:02 and
09:00:70:00:10:05) will not be transferred to the slave station with 100Mbps.
No.0 (1Gbps)
TSN HUB
No.1 (100Mbps)
No.0: Master station (CC-Link IE TSN Plus module)
No.1, No.2: Remote station
No.3: Local station
■Coexistence of line and star topologies
Line and star topologies can be mixed in the same network configuration.
• When the master station with a communication speed of 1Gbps and a remote station with a communication speed of
100Mbps exist in the structure, set "Communication Period Setting" to "Low-Speed" for the remote station with a
communication speed of 100Mbps.
No.0 (1Gbps) No.1 (1Gbps)
No.0: Master station (CC-Link IE TSN Plus module)
No.1: Local station
No.2, No.3: Remote station
• When the communication speed of the master station is 1Gbps, a connection cannot be established if the total cyclic data
size of all slave stations on the 100Mbps device side exceeds 2K bytes. This includes the devices with a communication
speed of 100Mbps that form a boundary between the communication speed of 1Gbps and 100Mbps.
No.0 No.1
(1Gbps) (1Gbps)
No.0: Master station (CC-Link IE TSN Plus module)
No.1: Local station
No.2 to No.6: Remote station
 Set the total cyclic data size within 2K bytes.
No.2 (100Mbps)
No.3 (1Gbps)
No.2 (100Mbps)
Low speed
TSN HUB
No.2 No.3
(1Gbps) (1Gbps)
2.1 Structure of CC-Link IE TSN Class B Devices and Ethernet Devices
No.3 (100Mbps)
Low speed

No.4
(100Mbps)
TSN HUB
No.5
(100Mbps)
No.6
(100Mbps)
2 CC-Link IE TSN SYSTEM CONFIGURATION
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