micro850 connection

Question

micro850 connection

fernandoamorim1703 opened this issue a year ago · comments

A question, I'm trying to use node-red's ethernet/ip node, I made some changes to the library because of the multiple service.

But I am facing connection problem. The connection is not maintained, the PLC always sends an FYN flag or even an RST.

Could you tell me why?

dmroeder · Answer 1 · Tue Apr 18 2023 21:57:46 GMT+0800 (China Standard Time)

Why are you opening an issue on my project instead of node red's EIP module?

Fernando Amorim · Answer 2 · Tue Apr 18 2023 22:00:03 GMT+0800 (China Standard Time)

I wanted to better understand the communication with the micro850

dmroeder · Answer 3 · Tue Apr 18 2023 22:09:32 GMT+0800 (China Standard Time)

I posted packets below of wireshark packets with the difference between CLX and Micro800. Maybe that will help.

https://www.plctalk.net/qanda/showpost.php?p=930765&postcount=28

You are trying to add Micro800 support to node-red?

Fernando Amorim · Answer 4 · Tue Apr 18 2023 22:46:52 GMT+0800 (China Standard Time)

Thanks a lot for the file. I think it will do.

Exactly, I'm trying to add micro800 support to node-red's eth/ip.
I faced some difficulties until I found out that it didn't support multiple service packets.
Now I'm having a problem with the connection, after making the queries the plc sends an FYN.

dmroeder · Answer 5 · Tue Apr 18 2023 23:01:49 GMT+0800 (China Standard Time)

I'd pay close attention to the forward open. Micro800 doesn't use the port segment, which is what those packets are showing. I think I showed more of that if you read further in that thread.