OMRON FINS TCP Issue

General Discussion
1

Guys,
I can connect from laptop to Omron PLC CJ1M using TCP Fins Driver. I cannot connect however when I use the company network. Wireshark shows SACK_PERM = 1.
The parameters of the local network are:
image
Any idea which parameter must be changed, since obviously it is not Omron TCP driver issue.

Thank you!

2

At the risk of being wrong and surprised again… I doubt this has anything to do with TCP selective ack being enabled or not. You probably just don’t have a route to the PLC on your company network or something.

3

That said, feel free to f around in your registry: Description of Windows TCP features - Windows Server | Microsoft Docs

4

Hi, Kevin, thank you for your prompt reply. I doubt too the issue has to do anything with SACK. In any case, I would not like to play around with the resisters on the server where Ignition and Kepware are installed, this is just in case I cannot figure out other solution. I was thinking what would help me is command netsh run on a computer where Omron TCP driver is in use, or Powershell TCP parameters list. That would be of real help…

5

It took me more time but the issue is solved. Not network problem.
Gateway IP address need to be added in ETN21 card settings:
image

6

Hi @d.vasilev,

I am having issues establishing communication to a CJ1W-ETN21 expansion module. I have configured mine with matching settings as I see from your screenshot, and I moved the nodes on my module to match the last octet of my IP address. On the ignition side, I am using the Omron FINS/TCP driver, I set the name and host name and left the other setting as they were defaulted.

Is there something else that you think I might be missing?

Thanks!