3-1 Routing Table Overview
3-1-2 Network Conditions That Require Routing Tables
3-1-2 Network Conditions That Require Routing Tables
Routing tables must be set for the following network conditions.
Mounting Two or More Communications Units (See Note) to a Single CPU Unit
Communications
Unit
Communications
Unit
Routin
uired.
Routing tables are not required when just one Communications Unit is installed in
each PLC and those Communications Units are connected in a single network.
Communications
Unit
Communications
Unit
Communications
Unit
Routing table not required.
Note: Network Communications Units include Controller Link Units, Ethernet Units,
CS/CJ-series DeviceNet Units, SYSMAC LINK Units, and SYSMAC NET Link Units.
Communicating with a PLC in Another Network
Routing tables are required when transferring FINS messages between networks or
using the CX-Programmer's remote programming/monitoring functions between
networks.
Setting Routing Tables in Two or More Nodes in the Same Network
Note
The following, however, is an exception. In this case, a local network table does not
need to be registered even if there is more than one Network Communications Unit.
If a local network table is not registered, network access will be possible to only the
network of the Communications Unit with the smallest unit number when a direct serial
connection is made to a target PLC.
3-4