Closed twiddler closed 1 year ago
Not supported. As a matter of fact XML DA is the least popular OPC server compared to others (DA/AE/HDA). With this solution you can parse DA return in JSON instead of XML, which is much more efficient and faster. Then you can compose SOAP message for its next destination, so why bother XML DA? Just my 2 cents. Thanks!
Thank you for your answer! 🙏
I am just getting into the whole OPC topic, so I might be mistaken here. I am developing a JavaScript application which will run on a Linux machine. From what I've found out so far is that OPC DA
ItemPath
s and ItemName
s and putting those in a text/xml
POST request.As the machine being controlled is running quite slow, response times up to 200 ms will certainly be fine. So that's why I'm sticking with OPC XML DA.
Looks like this solution is exactly what you're looking for,
Your concerns are all answered, I believe. Anything else?
Thanks again for responding. :+1:
I'll check the trade-offs between
Right now I am super-hesitant to alter the state of the machine that I am communicating with, so I opted for node-soap and wsdl-tsclient. wsdl-tsclient gave me reasonable results that I am refining manually.
Thanks again!
See above.