Manuals > Device Connection Guide > OMRON > Connection Procedure (Ethernet) > CS1/CJ1/CJ2/NJ/NX1P/NX1 (FINS) > Connection Example [CJ2M Series/Automatic Generation Method]

overview

This is a setting example for connecting to a CJ2M series device via Ethernet. Since the CJ2M has a built-in Ethernet port attached to the CPU, this example uses the built-in port to connect.

In this connection example, communication will be performed using the auto-generation method.

Model used

item	Model etc.
PLC	CJ2M-CPU31
Communication Unit	CPU Attached Port

Configuration environment

item	environment
OS	Windows7 Professional 64Bit
tool	CX-Net Ver 3.5.5.0
tool	CX-Programmer Ver9.51

Configuration details

item	setting	Setting items	Configuration Example
PLC side settings	Setting with switches and tools	IP address	192.168.0.100
		Subnet mask	255.255.255.0
		Port number	9600
		FINS Network Address	1
		FINS Node	100 (the end of the IP address)
		IP address conversion method	Automatic generation method
PC settings	Unit Settings	IP address	192.168.0.1
	Unit Settings	Port number	Automatic
	Folder and communication test settings	Source Network Number	000
		Source Node	999
		Destination network number	000
		Destination Node	999

* Most of the settings on the computer will be adjusted to match the settings on the unit.

In this connection example, the IP address conversion method is the "Automatic generation method". The "Automatic generation method" cannot be used with Ethernet communication cards older than ETN21. If you are using ETN01 or similar, please refer to the connection example in "Connection example [CS1 series/IP address table method]".

PLC side settings

Configure the "CJ2M". Settings are made using the switch on the front and the "CX-Programmer".

1.Set the front switch as follows:
Specify the end of the IP address with the front switch. There are two switches, 16(1) and 16(0), which are hexadecimal switches.
In this setting example, the last digit of the IP address is 100, which becomes "100" → "64" when converted to hexadecimal, so set "6" to 16(1) and "4" to 16(0).

c_plc_0244

switch	explanation	Setting contents
UNIT No.	Unit Number	0
NODE No.　X16(1)	Node Number *Usually set the last value of the IP	6
NODE No.　X16(0)	Node Number *Usually set the last value of the IP	4

2.In "CX-Programmer", select "CX-Net (Network Settings)" from the [Tools] menu and start "CX-Net".
For more information about "CX-Net" and "CX-Programmer", please refer to the manufacturer's manual.

3.Select "Project" - "Create New" to create a project.

4.Select "Project" - "Add PLC" and in the dialog that appears, set the PLC model to "CJ2M" and the network type to "Toolbus" and click "OK".

5.Select "Online Connection" from the "PLC" menu to connect to the PLC, select "Routing Table" - "Settings", and confirm that the local network number is set to 1.
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6.In "CX-Programmer", select "PLC" - "Online connection" to connect to PLC.

7.Double-click "I/O Table Unit Settings" from the tree to display the settings screen.
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8.Create an I/O table from the displayed setting screen.
In this example, select the built-in Ethernet port.
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9.Double-click the added Ethernet unit to display the unit's setting screen and configure it as follows:
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setting	Setting contents
IP address	192.168.0.100
Subnet mask	255.255.255.0 (Please set according to your environment)

10.Select the IP address translation method for FINS/UDP
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setting	Setting contents
IP Address Translation	Automatic generation method (dynamic)

11.Display the transfer screen by selecting "PLC" - "Transfer" - "Transfer (PC → PLC)", check the necessary items, and write the settings.
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PC settings

Use the Server application to connect to the PLC for which you have set up communications.

1.Right-click "Application" - "Driver" in the tree and select Add Driver.

2.Select the following units from the displayed driver list and add them:
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3.Open the properties of the added unit (U01) and click Communication Settings.
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4.Configure the following in "PC Settings"
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setting	Setting contents
Computer IP address	192.168.0.1
Computer port number	Automatic

5.Set the following in "Unit side settings"
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setting	Setting contents
Unit IP Address	192.168.0.100
Unit Port Number	9600

6.Select "Ping Test" to check if the ping goes through normally.
If you see a message like "Ping test is success～", the test was successful.

7.Select the protocol in "Communication Details"
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setting	Setting contents
protocol	UDP (recommended)

8.Perform a connection test to check the connection
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If a message such as "Connection OK" is displayed, the connection is confirmed to be OK.

When testing the connection and setting up the folder, do not forget to specify the node (network settings).

•Source/Destination Network Number: Please specify the network number. Specifying 000 will indicate your own network.

•The source/destination node sets the node. If you specify 999, the last part of the IP address will be the node.

If you connect using the settings in this example, you can also connect by specifying "1,1,1,100".

c_plc_0251

Connection example [CJ2M series/automatic generation method]

Connection example [CJ2M series/automatic generation method]