Exception frm HRESULT : 0x80040202 in OPC Client OnDataChange hand

Question

0.00/5 (No votes)

See more:

I am developing OPC Client in windows C#. I have developed the code and reading OPC Items on Sampling as well as event based (OnDataChange). When I am working with local machine then my code works fine with both Sampling as well as OnDataChange, but when I am trying to read data from Remote OPC Server then Sampling works fine but I am not able fetch data on event based process. I am able to connect to the OPC Server but when i am adding subscription to it then i am getting error.

HRESULT : 0x80040202.
       group1.DataChanged += new DataChangeEventHandler(this.DataChangeHandler);
               group1.AdviseIOPCDataCallback();//exception HRESULT : 0x80040202.


OPC server connected & then register the group also but i got the exception when reading data.

Posted 12-May-11 18:49pm

vrushali katkade

Updated 12-May-11 19:09pm

v3

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Kim Togo · Answer 1 · 2011-05-15T01:09:00

Solution 1

If it works on the local machine and not on a remote. I think you have to look at firewalls or security settings on the OPC Server. Look at the manual from the vendor and see if there is some help.

Posted 15-May-11 1:09am

Kim Togo

stijn.vandenbroucke · Answer 2 · 2011-05-30T22:00:00

Solution 2

You probably have a DCOM issue. I'm adviced to run the OPC communication process & OPC server allways on the same machine.
What library have you used for your OPC Client?

Posted 30-May-11 22:00pm

stijn.vandenbroucke