Member Login
member
passwd
remember me on this computer.

- join now -

Search

Neat Stuff

Visit our shop for nerds in control lifestyle products.

Cool stuff
Select a topic of interest:
...and press:
Fortune
Premature optimization is the root of all evil.
-- D.E. Knuth
RSS Feed
RSS feed Use this link to get an RSS feed of the Control.com article flow, for private, non-commercial use only:
www.control.com/rss
Select a Page Style
Select one of the following styles:
- BluFu
- Classic
(cookies required)
from the Automation List department...
problem with OPC conection
Communications topic
advertisement
Posted by cyfro.mat on 26 January, 2008 - 10:49 pm
Hello!

I have problem with connection between OPC Server -Client on my own machine(localhost).

In Opc Client I'm able to conect to OPC server but I can't see any grups and items that I sellected in OPC Server! What I need to do to get access to this Items in OPC Server?

1. My OS is win XP sp2
2. I've installed OPC Core Components
3. I've done all DCOM settings : I turned off Firewall and got full rights for everyone users.

What I done wrong...
please help

Posted by Walt Boyes on 27 January, 2008 - 10:04 pm
Suggest you contact the OPC Training Institute...run by a bunch of recently ex-Matrikon engineers, they have excellent classes, tutorials, and may even provide service. http://www.opcti.com

Walt Boyes
Editor in Chief
Control magazine
www.controlglobal.com
blog:Sound OFF!! http://www.controlglobal.com/soundoff
_________________

Putman Media Inc.
555 W. Pierce Rd. Suite 301
Itasca, IL 60143
630-467-1301 x368
wboyes@putman.net

Posted by Eric Murphy on 27 January, 2008 - 10:22 pm
You need to describe the problem in a bit more detail, but it sounds like you still have DCOM issues.

If you can connect to the OPC Server, but the OPC Client can not read data (assuming you're using subscriptions), it means the DCOM permissions on the client are not correct.

You can find the whitepaper on setting DCOM permissions on XP SP2 at this link:
http://www.matrikonopc.com/support/1299/index.aspx

OPC Exchange
http://blog.matrikonopc.com

Posted by Vipul Shah on 1 February, 2008 - 10:29 pm
1. Which client are you using to connect to OPC Server?
2. Are you doing the process of adding groups and items in the client?
3. Your client must be giving you some COM error code. Can you identify and tell me that?
4. Suggest you also post this question on http://www.opcfoundation.org/forums. This forum is frequented by OPC Gurus and is a better place for OPC related queries.

Vipul Shah
eGenietech Software Services
http://www.egenietech.com
vipul@egenietech.com

From Control Engineering magazine...
Related articles from Control Engineering magazine
Above articles copyright 2008 Reed Business Information. Subject to its Terms of Use.

Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2008 Control Technology Corporation. All rights reserved.

Users of this site are benefiting from open source technologies, including PHP, PostgreSQL and Apache. Be happy.

Advertisement
Our Advertisers
Help keep our servers running...
Patronize our advertisers!