Professional OPC
Development Tools

logos

Online Forums

Technical support is provided through Support Forums below. Anybody can view them; you need to Register/Login to our site (see links in upper right corner) in order to Post questions. You do not have to be a licensed user of our product.

Please read Rules for forum posts before reporting your issue or asking a question. OPC Labs team is actively monitoring the forums, and replies as soon as possible. Various technical information can also be found in our Knowledge Base. For your convenience, we have also assembled a Frequently Asked Questions page.

Do not use the Contact page for technical issues.

Subject Replies / Views Last Post
Subscribe Problem
Category: Reading, Writing, Subscriptions, Property Access
Topic started 23 May 2011 14:31, by Peter Siegel
Last Post 27 Oct 2011 06:37
by Peter Siegel
Replies:12
Views:8556
Last Post by Peter Siegel
27 Oct 2011 06:37
Vtq object is null after running for some time
Category: Reading, Writing, Subscriptions, Property Access
Topic started 17 Oct 2011 08:44, by support
Last Post 17 Oct 2011 08:45
by support
Replies:0
Views:3435
Last Post by support
17 Oct 2011 08:45
How to read all values in all branches.
Category: Reading, Writing, Subscriptions, Property Access
Topic started 04 Oct 2011 17:29, by julian
Last Post 06 Oct 2011 04:43
by support
Replies:8
Views:5775
Last Post by support
06 Oct 2011 04:43
Writing to OPC item - when would the ItemChanged event occur?
Category: Reading, Writing, Subscriptions, Property Access
Topic started 01 Oct 2011 16:11, by support
Last Post 01 Oct 2011 16:30
by support
Replies:0
Views:3570
Last Post by support
01 Oct 2011 16:30
SubscribeMultipleItems - deadband C#
Category: Reading, Writing, Subscriptions, Property Access
Topic started 01 Sep 2011 09:49, by hedgehog
Last Post 08 Sep 2011 05:27
by hedgehog
Replies:8
Views:6232
Last Post by hedgehog
08 Sep 2011 05:27
Timeouts with OPC write, using Simatic OPC server remotely
Category: Reading, Writing, Subscriptions, Property Access
Topic started 14 Jun 2011 14:35, by support
Last Post 10 Aug 2011 08:01
by support
Replies:7
Views:6284
Last Post by support
10 Aug 2011 08:01
Issue with a OPC Yokogawa Server
Category: Reading, Writing, Subscriptions, Property Access
Topic started 28 Jul 2011 09:59, by Thierry.beguin
Last Post 29 Jul 2011 07:32
by support
Replies:3
Views:4765
Last Post by support
29 Jul 2011 07:32
How to Read from Device
Category: Reading, Writing, Subscriptions, Property Access
Topic started 14 Jul 2011 16:02, by support
Last Post 25 Jul 2011 14:32
by support
Replies:0
Views:3375
Last Post by support
25 Jul 2011 14:32
EasyDAClient not firing item changed event after writing a negated value to a register.
Category: Reading, Writing, Subscriptions, Property Access
Topic started 11 Jul 2011 02:19, by thotchkiss
Last Post 11 Jul 2011 05:53
by support
Replies:0
Views:4301
Last Post by support
11 Jul 2011 05:53
Subscribtion timeout
Category: Reading, Writing, Subscriptions, Property Access
Topic started 16 Jun 2011 08:09, by Peter Siegel
Last Post 09 Jul 2011 05:08
by support
Replies:3
Views:4594
Last Post by support
09 Jul 2011 05:08
QuickOPC.NET Value Precision (rounding issue)
Category: Reading, Writing, Subscriptions, Property Access
Topic started 07 Jun 2011 12:41, by support
Last Post 08 Jun 2011 05:15
by support
Replies:3
Views:4248
Last Post by support
08 Jun 2011 05:15
Use ReadMultipleItemValues, or subscription/event handlers?
Category: Reading, Writing, Subscriptions, Property Access
Topic started 02 Apr 2011 18:24, by support
Last Post 03 Apr 2011 12:21
by support
Replies:2
Views:4286
Last Post by support
03 Apr 2011 12:21
error -1073479673 "OPC operation failure"
Category: Reading, Writing, Subscriptions, Property Access
Topic started 30 Mar 2011 12:43, by immerse
Last Post 30 Mar 2011 12:57
by support
Replies:0
Views:8155
Last Post by support
30 Mar 2011 12:57
Async writes
Category: Reading, Writing, Subscriptions, Property Access
Topic started 29 Mar 2011 10:06, by support
Last Post 29 Mar 2011 10:07
by support
Replies:0
Views:3494
Last Post by support
29 Mar 2011 10:07
Write Not Complete Errors
Category: Reading, Writing, Subscriptions, Property Access
Topic started 21 Feb 2011 08:46, by support
Last Post 02 Mar 2011 13:35
by support
Replies:10
Views:8587
Last Post by support
02 Mar 2011 13:35
Non-simple data types
Category: Reading, Writing, Subscriptions, Property Access
Topic started 03 Feb 2011 17:28, by support
Last Post 18 Feb 2011 11:54
by Emilio
Replies:12
Views:9039
Last Post by Emilio
18 Feb 2011 11:54
Values coming in incorrect order
Category: Reading, Writing, Subscriptions, Property Access
Topic started 04 Feb 2011 09:34, by support
Last Post 04 Feb 2011 09:47
by support
Replies:0
Views:3589
Last Post by support
04 Feb 2011 09:47
Topic timeouts
Category: Reading, Writing, Subscriptions, Property Access
Topic started 02 Feb 2011 07:52, by support
Last Post 04 Feb 2011 09:30
by support
Replies:3
Views:6576
Last Post by support
04 Feb 2011 09:30
Exception accessing VTQ.Quality
Category: Reading, Writing, Subscriptions, Property Access
Topic started 24 Jan 2011 19:59, by support
Last Post 25 Jan 2011 17:46
by support
Replies:4
Views:5180
Last Post by support
25 Jan 2011 17:46
"External component has thrown an exception." in SubscribeItem
Category: Reading, Writing, Subscriptions, Property Access
Topic started 15 Jan 2011 08:26, by support
Last Post 19 Jan 2011 10:42
by support
Replies:3
Views:4714
Last Post by support
19 Jan 2011 10:42
Time to create page: 0.054 seconds