Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

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Wiring for use of the CC-Link IE Field Network (FR-A800-GF) Installation and wiring
2 - 104
2.11.2 Network configuration
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Network topology
The network can be wired into star topology, line topology, and ring topology.
A network can consist of a combination of star and line topologies, but the ring topology cannot
be combined with star or line topology.
Add/remove slave stations one by one. If multiple slave stations are added/removed at a time, all
stations on the network will be reconnected, resulting in a momentarily error in all the stations.
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Station number and connection position
Modules can be connected in any order regardless of the station number.
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Cascade connection
Up to 20-layer connection is available for the cascade connection.
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Replacing CC-Link IE Field Network devices
For star topology, slave stations can be replaced without powering off the whole system.
Network topology Description
Star topology
Modules are configured into a star using a switching hub and Ethernet cables. Slave stations can
be easily added in a star topology. If an error occurs, data link continues among normally-
operating stations in a star topology.
Line topology
Modules are configured into a line with Ethernet cables and without a switching hub. If an error
occurs, the station in error and the stations after that will be disconnected from the network.
Ring topology
Modules are configured into a ring using Ethernet cables. If an error occurs, data link continues
among normally operating stations without a switching hub.
Tab. 2-48: Network topologys
NOTE Refer to the MELSEC iQ-R, MELSEC-Q, or MELSEC-L CC-Link IE Field Network Master/Local Module
User's Manual for the detailed network configurations.