"Forward open failed" when trying to read tags from Berghof PLC about pylogix

[dmroeder]

This is for Rockwell PLC's only.

[brunifrancesco]

Oh, that's interesting.
Any suggestion to make it working with Berghof?
Any other library you can think of?

[dmroeder]

Unfortunately, I don't know anything about that brand or module.

[brunifrancesco]

Ok, it would be too much complex try to write a simple driver? I can see it by myself but I need your help for sure.
Actually your discover function works, so I deduce that part of your code is still usable.

[dmroeder]

There is a minimum amount of features a that an Ethernet I/P compliant device must support, List Identity (Discover) is one of them. So every Ethernet I/P device will respond to that. Communicating with it in the specific way that it is expecting is a very different thing.

My best advice is get a sharktap or a port mirroring switch and wireshark the connection and traffic. If your next post is going to be "I don't know how to use wireshark", you have a lot of work ahead of you to write a "simple" driver. Knowing now to use wireshark is a must. And don't wireshark what pylogix is trying to do, wireshark a device that is currently successfully communicating with that device.

[brunifrancesco]

You've been crystal. I've used Wireshark in the past, I know it.
Thanks for your time.

[dmroeder]

If you find anything interesting in wireshark, you can email me. My address is in the setup file.

[brunifrancesco]

Thanks for the support!Francesco BruniIl giorno 17 dic 2022, alle ore 17:53, dmroeder ***@***.***> ha scritto: If you find anything interesting in wireshark, you can email me. My address is in the setup file. —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: ***@***.***>