Mitsubishi Electric MELSEC iQ-R Series User Manual page 52

■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 local station and remote station with a
communication speed of 100Mbps exist in the structure, set "Communication Period Setting" to "Low-Speed" for the local
station and remote station with a communication speed of 100Mbps.
No.0
Class B (1Gbps)
No.0: Master station (CC-Link IE TSN Plus module)
No.1: Local station
No.2, No.3, and No.4: Remote station
Class A: CC-Link IE TSN Class A device
Class B: CC-Link IE TSN Class B device
• 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
Class B (1Gbps)
No.0: Master station (CC-Link IE TSN Plus module)
No.1: Local station
No.2 to No.6: Remote station
Class A: CC-Link IE TSN Class A device
Class B: CC-Link IE TSN Class B device
 Set the total cyclic data size within 2K bytes.
2 CC-Link IE TSN SYSTEM CONFIGURATION
50
2.2 Structure of CC-Link IE TSN Class B/A Devices and Ethernet Devices
No.1
Class B (1Gbps)
No.1
Class B (1Gbps)
No.2
Class A (100Mbps)
Low speed
No.2 No.3
Class B (1Gbps) Class B (1Gbps)
No.3
Class A (100Mbps)
Low speed
No.4
Class A (100Mbps)
Low speed

No.4
Class B
(100Mbps)
TSN HUB
No.5
Class B
(100Mbps)
No.6
Class B
(100Mbps)