MoonPicnic

CJ1W-EIP21 to ControlLogix

9 posts in this topic

Hello,

Just made this account to get an answer hopefully quickly.

I have an existing Omron CJ1M that is talking to a ControlLogix over a CJ1W-EIP21. I don't have experience in configuring Omron PLC's, but the Omron and Allen Bradley are already messaging to each other. My question is how can I get more words to be transferred between the two plc's? There are already 4 words (INTS) being transferred and are working properly but I have used up all the bits and am now needing at least 2 more words. I know in RSLogix 5000 I need to make the array size bigger, but where/how do I do that in CX-Designer?

Thank you for any help.

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On the AB side, it's it's probably a Generic Ethernet Module in the IO Tree.  You must be offline to change it and then download to the PLC.

Then remember that the Omron and AB configurations must match for instance numbers, sizes and datatypes.

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@pcmccartney1

I know what to do on the AB side of things. It's just I'm not sure where to find the config in the Omron side to enlarge the array size to match.

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@chelton

I believe that's exactly what I'm looking for. I'll give it a go here in a bit and let you know what I do. I'll have to see if I can upload what they have already in their CJ1W to the Omron Config.

Do you know how to do that already perhaps?

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6 minutes ago, MoonPicnic said:

@chelton

I believe that's exactly what I'm looking for. I'll give it a go here in a bit and let you know what I do. I'll have to see if I can upload what they have already in their CJ1W to the Omron Config.

Do you know how to do that already perhaps?

You have to use Network Configurator for EtherNet/IP.  It is included with CX-One. You can connect to the controller and then to the EIP21 module to upload the datalink settings.  Section 1.4 in the guide above describes using the Network Configurator for EtherNet/IP. After step 1-4-2 in the process you can connect to the network and upload from the network to see what connections are already configured.  Then you can skip adding the CJ2 PLC and just use what you have uploaded to follow the rest of the procedure.

 

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Start Network Configurator - The configuration may have been saved. If so open the file and connect, and verify structure

Otherwise Connect then upload configuration from network

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@MoonPicnic Before increasing the array size of the network variable make sure there is free memory at the end of the existing array, or change the address to an area of free memory.

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@chelton Thank you for reminding me of doing that! I didn’t think of that. Thank you guys for the help. I’ll let y’all know if there’s any more issues I run into.

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