Mitsubishi Electric MELSEC iQ-R Series User Manual page 52

■Coexistence of line and star topologies
Line and star topologies can be mixed according to the availability of each connection.
• Connect Ethernet devices at the end of line topology.
• When connecting the Ethernet device in a star topology, connect the Ethernet device to the general-purpose hub.
(1)
No.0: Master station
No.1: Local station
No.2, No.3: Remote station
(1), (2): Ethernet device
Class A: Authentication Class A device
Class B: Authentication Class B device
■Ring topology
In a "Mixture of Authentication Class B/A or Authentication Class A Only" system configuration, the network cannot be
configured in a ring topology.
5 SYSTEM CONFIGURATION
50
5.2 Structure of Authentication Class B/A Devices and Ethernet Devices
No.0
Class B
No.1
Class B
General-
purpose hub
No.3
Class A
No.2
Class A
(2)