Omron CS1W-ETN21 Routing Table Setting Examples, Example 2 Three Interconnected Networks

Creating Routing Tables Section 6-4

6-4-3 Routing Table Setting Examples

■Example 1: Local Network Table for a PLC With Multiple Units Mounted

This example shows the local network table settings for a PLC to which multi- ple CPU Bus Units are mounted.

Ethernet network

(Network #A)

Controller Link network

(Network #B)

E	C	C	P	PS: Power Supply Unit
				CPU: CPU Unit
T	L	P	S
N	K	U		ETN: Ethernet Unit
				CLK: Controller Link Unit

Unit #a Unit #b

Local Network Table

No.	Local	CPU Bus
	network	Unit
1	A	a
2	B	b

■Example 2: Three Interconnected Networks

This example shows the relay network table settings for three different inter- connected networks.

Network #A

Network #B

Network #C

PLC #1

Node #a

PLC #2 Node #b Node #c

PLC #3

Node #d

PLC #4 Node #e Node #f

PLC #5

Node #g

Relay Network Table

No.	End	Relay	Node
	network	network
1	B	A	b
2	C	A	b
1	C	B	e
1	A	B	c
2	C	B	e
1	A	B	c
1	A	C	f
2	B	C	f

In the table for PLC #3, for example, if network #A is taken as the end net- work, then network #B becomes the relay network and node #c becomes the relay node. If network #C is taken as the end network, then network #B still becomes the relay network and node #e becomes the relay node.

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