I'm currently connecting from node-red to Aubobot through TCP in node-red but node-red shows disconnected and connected frequently, and it shows an error connecting to PLC I have no idea what is this and how to solve it. Also, I can't get any data out of the AUBO. I am able to ping AUBO IP from my c…

Ok some basic network troubleshooting here Can you SSH into the NR box ? If so do so and then perform a ping to the Aubobot If you can ping and get responses then try and a Telent connection on the port that the Aubobot is expecting - what happens when you do this ? Craig

Also did you see this other thread ? [image] Communication through tcp/ip to Aubobot General I'm currently connecting from node-red to Aubobot through tcp in node. But after I connected them, it will show an intermittent state of the connection. Does anyone encounter this…

Thank you for the suggestion craig! I tried to ping the IP address of the Aubo but it was unsuccessful and displayed an error that says "Error connecting to PLC: Error: connect EHOSTUNREACH" . However, i am unsure of what SSH and NR box is and i am uncertain of the steps i see online as i am current…

What is Node Red running on ? Raspberry PI etc ? What is the operating system of your Machine that you are workign at ? Assuming it is Windows 7 or above You need to download a program called Putty and install it then Then open it up and create a ss connection to your Node Red Login to the Node…

hi, sorry for the late reply. I try to use the putty but it shows nothing I have no idea what is wrong and I have found some similar cases like mine, it says it might be PLC not accepting connections anymore, will this possible? [Screenshot (21)]

Well it looks like your PLC has plenty of resources available so i do not think that it is an issue there - but it may have some sort of firewall protection - so it could be actively refusing the connection - but you would hope there would be some sort of message to that effect. I think you still h…

our node-red is running on SICK TDC-E we are using a window PC it is window 7

hi, I just found out that the error connecting to plc is not from the AUBO flow but is another flow [Screenshot (38)] (this is the error connecting to plc from, v1.3.5) [Screenshot (39)] (this is the flow I try on the v1.3.5, but it shows the same result, the connection is unstable and when I d…

Node-RED

Node-RED Forum

Error connecting to PLC: Error: connect EHOSTUNREACH

General

craigcurtin 13 May 2022 04:30 3

Also did you see this other thread ?

Craig

Topic		Replies	Views
Cannot collect any data from the aubobot General node-red-dashboard	7	334	25 May 2022
Communication through tcp/ip to Aubobot General	16	983	7 January 2021
Cannot connect to AUBO using node red General node-red-dashboard	9	568	4 May 2022
The node-red and PLC communication General	10	2520	1 June 2021
Communication between Iot2000 and PLC S7-1500 Industrial	1	769	17 December 2020

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

Error connecting to PLC: Error: connect EHOSTUNREACH

Related topics