Omron CJ Series, Operation Manual

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2-1 Basic Procedures
2-3
PLCs with More Than One Network Communications Unit
If the relay PLC has more than one Network Communications Unit (see note 1), it is
normally necessary to create and transfer a local network table (see note 2).
Select
Tools
−
Start Routing Table to start the Routing Table Component, set the local
network table, and download it to the relay PLC.
Note 1: Network Communications Units include Ethernet Units, Controller Link Units,
SYSMAC LINK Units, DeviceNet Units, and FL-net Units. Serial Communications
Boards/Units are not included except in the following case: If serial ports are regis-
tered in the local network table to treat them as networks, the serial ports must be
treated as Network Communications Units, including the serial ports on the CPU Unit.
EtherNet/IP Units can be used as an Ethernet Unit.
Note 2: The local network table is one of the routing tables. It lists the unit numbers and net-
work addresses of the network Communications Units.
Number of Network Communications
Units
Local network table registration
Only 1 Not required
More than 1 Required
Overall Procedure
Connect to a Communications Unit/port to
enable accessing it.
Connect online to the relay PLC.
Start the CX-Integrator.
Create the local network table.
Transfer the local network table to the relay PLC
via the serial connection.
Example: Select
Component
−
Auto Online
from the menu bar to automatically connect
online using a serial connection.
Select Tools - Start Routing Table from the
menu bar.
Create the local network table and select
Option
−
Transfer to PLC .
Right-click the desired network in the Online
Connection Information Window and select
Connect from the pop-up menu.
Right-click and select
Transfer [Network to
PC] .
Upload the network structure.
Required
Network Configuration Example
Computer running CX-Integrator
The local network table must be transferred
when the relay PLC is still the target PLC to
register the correspondence between unit
numbers and network addresses.
At least one network address must be
assigned in the local network table.
CS/CJ-series PLC
Relay PLC (= target PLC)
Direct serial or
network connection
More than One Network Communications Unit
(Ethernet Unit, Controller Link Unit, SYSMAC
LINK Unit, DeviceNet Unit, or FL-net Unit)