CJ2 Ethernet/IP connection issue

[patch91484@hotmail.com 0]

I have an interesting problem.

I am using CX-Programmer to connect to a CJ2 over a VPN. If I set the connection to use FINS, everything works fine. If I set the connection to use Ethernet/IP, it times out almost instantly. I can plug straight into the CJ2 and use Ethernet/IP and that works. I've disabled my firewall to rule that out. I've wiresharked the connection and I don't see any packets when using Ethernet/IP (not even originating packets). I can of course see packets using FINS since that connection works.

I have also noticed that Sysmac Studio will connect to my NJs over the VPN, but I am unable to transfer or compare any of the Ethernet/IP connection settings. I'm thinking these two issues are related.

I'm running the latest version of CX-Programmer on a windows 10 64 bit laptop. Any ideas what this could be?

[Crossbow 295]

For EtherNet/IP, do you have the default gateway in the PLC right pointing to the VPN router?  Are your PC and the PLC on the same subnet based on IP addresses?

[patch91484@hotmail.com 0]

Yes the default gateway is pointing to the VPN router. The IPs of both the PLC and PC are on the same subnet.

I believe this would be required in order for the FINS ethernet connection to work, correct?

[patch91484@hotmail.com 0]

One more detail that may be helpful. I just tried to connect using a virtual machine and it works. So I am running a windows 7 virtual machine on a windows 10 host. Running Cx-Programmer on the virtual machine, I can connect using Ethernet/IP (with the host machine connected to the VPN). If I try to run Cx-Programmer on the host, I can not connect using Ethernet/IP.

This leads me to believe cx-programmer isn’t using the correct network adapter (the VPN network adapter). I’m not sure what the remedy for that would be.

 

Thanks

[Crossbow 295]

Sounds more like a firewall issue then...

[patch91484@hotmail.com 0]

That is what I originally thought as well. I turned off all firewalls but the problem persists. I'm stumped on this one...