08-10-2016 05:07 AM - edited 08-10-2016 05:35 AM
Hi :
I want to use OPC UA solution to access data between two computers LabVIEW(Labview 2015, DSC mode 2015) and Codesys (V3.5 SP9) .
The client side is LabView and server side is Codesys.
I am sure server side work fine because I can use third party UAexpert that can access data.
Question 1 : Can this solution work between LabView and Codesys ?
Question 2 : If question 1 is yes ,I wrote a basic client side of Labview sample program to access server data.
This sample program use three VI , OPC UA (1)connect.vi (2)Read.vi (2) Write.vi
Now I got a problem . The connect.vi can connect server (endpoint URL is correct , error code is 0) , but it shows Node path does exist (-356677) as attachment.
I tried many path ,it still failed. How can I get Node path or My sample problem is wrong ?
Thank you.
01-05-2017 11:40 AM
The way your code is written now with the BLANK node path and merged errors and then the Shift Register to pass the error back around to the start of the loop again is probably the issue.
The Write is going to generate the error since the Node input is blank - then that error will propagate to every subsequent loop cycle
07-13-2020 09:17 AM
Dear Friend
I am facing the same issue.
Were you able to solve it. ? Would love to hear from you on the same.
Thanks