CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 235
CJ1W-EIP21
Manufacturer Part Number
CJ1W-EIP21
Description
Ethernet I/P Module
Manufacturer
Omron
Datasheet
1.CJ1W-EIP21.pdf
(469 pages)
Specifications of CJ1W-EIP21
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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8-4
8-4-1
Local Network Table
Relay Network Table
Routing Tables
Routing Tables
Routing Table Overview
Note
When the FINS communications service is used, routing tables must be cre-
ated in advance. Routing tables are required in the following circumstances.
It is not necessary to set routing tables if one Communications Unit is
mounted to the PLC and the nodes are connected as one network. The rout-
ing tables are required not only for nodes communicating via the FINS com-
munications service but also for all relay nodes on the network.
The routing tables describe the transmission path for FINS messages when
the FINS communications are used. It consists of two tables: A local network
table and a relay network table.
The local network table is a table describing the correspondences among unit
numbers of the Communications Units and Boards mounted to each node.
1. The unit number is set (0 to F: 1 to 15) using the rotary switch on the front
2. The network address is the number of the network (1 to 127) to which the
A relay table is a table that shows the nodes to which data should be sent first
in order to send data to a network that is not connected to the local node. It
shows the correspondence between the address of the final destination net-
work, and the network address and node address of the first relay point of the
path to reach there. When internetwork communications are carried out, the
end network can be reached by following the relay points.
Example
• When communicating with a PLC or computer on another network (e.g.,
• When multiple Communications Units are mounted to a single PLC (i.e.,
• When routing tables are used for one or more other nodes on the same
remote programming or monitoring using FINS messages or a CX-Pro-
grammer)
CPU Unit).
network.
of the EtherNet/IP Unit (built-in port).
Communications Unit or Board is connected. It is set when the local net-
work table is created.
Unit #04
Unit #05
Unit #06
Unit #07
Network #1
Network #2
Network #3
Network #4
Local network
address
Local Network Table
1
2
3
4
Section 8-4
Unit number
04
05
06
07
207
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