TG - CJ2 to CJ2 EthernetIP Quick Guide

Purpose: The purpose is to show how to use tag data links to establish communication between two CJ2 PLCs to send data between the PLCs

Procedure:

[Step 1]

Get online with the CJ2H and give it an IP address.

[Step 2]

Click on the IO table and unit setup and make sure you are in program mode.

[Step 3]

You will see this tab. Put in an IP address and a subnet mask.

 [Step 4]

For this example the CJ2H will have 192.168.250.3 with a subnet mask of 255.255.255.0

 [Step 5]

Go to network configurator make a new project and make an EthernetIP connection.

[Step 6]

Set the communications for the network configurator software. In this example I am using EthernetI/F

 [Step 7]

Go to “network” and then press connect to get online with the network configurator software.

[Step 8]

Be on the same subnet and press OK.

[Step 9]

Press OK.

[Step 10]

Use existing network and press OK.

 [Step 11]

Press network and then press upload.

 [Step 12]

Press no.

[Step 13]

Press no.

 [Step 14]

Press OK. You can click “delete offline devices” as well. In this example you can press OK.

[Step 15]

Here are both the PLCs the CJ2M and the CJ2H for the network.

 [Step 16]

Double click on the CJ2M PLC

[Step 17]

Click on the “tag sets” tab and then press “Edit tags”.

[Step 18]

Click the new tab. Make sure you are on the Out – Produce tab. The output will send data from the CJ2M to the CJ2H.

[Step 19]

Create a tag and put a byte size. This example is using a CJ memory address D100 with 4 bytes (2 words) of data.

[Step 20]

Press Close.

 [Step 21]

Press In – Consume.

[Step 22]

For input: coming from the CJ2H to the CJ2M. 

[Step 23]

Press close.

[Step 24]

Press OK. You should be able to see the tag(s) in the chart.

[Step 25]

Press “yes” to create the tag sets.

 [Step 26]

Press “OK”.

[Step 27]

Double click the CJ2H (it shows CJ2B-EIP21 which is what they call the EIP portion of the CJ2H-CPU__-EIP model).

[Step 28]

Click on the “tag Sets” and press “edit tags”.

[Step 29]

Press Out – Produce and select “new”. 

 [Step 30]

The image below is showing H100 which is holding relay memory which is memory retentive and bit level addressable. 

[Step 31]

Press close.

[Step 32]

Go to the In-Consume and press “New”.

 [Step 33]

For the consume tag in this example is a holding area word 0 and is 4 bytes (2 words) so H0 and H1.

[Step 34]

Press close

[Step 35]

Press OK.

 [Step 36]

Press Yes

 [Step 37]

Press OK.

 [Step 38]

Double click the CJ2M

 [Step 39]

Press the arrow button to register the connection

[Step 40]

Double click the registered connection

 [Step 41]

Press the arrow down and select the 4 byte data at D0

[Step 42]

This step shows the CJ2H is sending data from H100 to D0 in this established connection.

[Step 43]

Press close

[Step 44]

Press OK

[Step 45]

Now the CJ2M from D100 will send data to the CJ2H H0 memory

[Step 46]

Press Close

 [Step 47]

Double click the CJ2H

[Step 48]

Register the connection

[Step 49]

Double click the registered connection 

 [Step 50]

This screen will appear below and match the output tag to the input tag

[Step 51]

Press OK

[Step 52]

Go to `network` and press `Connect`

[Step 53]

Press OK when on the correct subnet

[Step 54]

Press OK

[Step 55]

Go to `network` and press `download`

[Step 56]

This is what it looks like when the configuration is getting downloaded

[Step 57]

Press OK

On the CJ2M we have FFFF that we got from the CJ2H PLC