Professional OPC
Development Tools

logos

lupa

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.

Reading, Writing, Subscriptions 73 topics

Subject Replies / Views Last Post
Exception from HRESULT: 0x80004005 (E_FAIL) using Client.ReadValue()
Category: Reading, Writing, Subscriptions
Topic started 19 May 2022 14:41, by albi.majun.1960@gmail.com
Last Post 20 May 2022 12:51
by support
Replies:1
Views:2354
Last Post by support
20 May 2022 12:51
Filter subscriptions
Category: Reading, Writing, Subscriptions
Topic started 13 Apr 2022 07:38, by federica
Last Post 13 Apr 2022 17:00
by support
Replies:1
Views:1186
Last Post by support
13 Apr 2022 17:00
ReadvalueList error
Category: Reading, Writing, Subscriptions
Topic started 23 Dec 2021 10:51, by info@software2000.it
Last Post 19 Jan 2022 17:09
by info@software2000.it
Replies:21
Views:4870
Last Post by info@software2000.it
19 Jan 2022 17:09
Error Writing a string value -> Write failed. Reason: BadWriteNotSupported
Category: Reading, Writing, Subscriptions
Topic started 07 Dec 2021 09:54, by albi.majun.1960@gmail.com
Last Post 08 Dec 2021 08:04
by support
Replies:2
Views:1389
Last Post by support
08 Dec 2021 08:04
Authentication with username and password with Visual FoxPro
Category: Reading, Writing, Subscriptions
Topic started 02 Dec 2021 16:37, by info@software2000.it
Last Post 07 Dec 2021 20:15
by support
Replies:7
Views:2208
Last Post by support
07 Dec 2021 20:15
Get data from ARRAY Excel VBA
Category: Reading, Writing, Subscriptions
Topic started 14 Feb 2019 19:27, by Šilhavý
Last Post 15 Nov 2021 13:25
by koggaccio
Replies:19
Views:8357
Last Post by koggaccio
15 Nov 2021 13:25
Subscription to datachange in visual foxpro
Category: Reading, Writing, Subscriptions
Topic started 08 Nov 2021 16:53, by info@software2000.it
Last Post 09 Nov 2021 15:02
by support
Replies:2
Views:853
Last Post by support
09 Nov 2021 15:02
VB Script syntax for ASP pages - error '80131600'
Category: Reading, Writing, Subscriptions
Topic started 03 Jul 2021 16:14, by albi.majun.1960@gmail.com
Last Post 06 Jul 2021 14:35
by support
Replies:5
Views:1761
Last Post by support
06 Jul 2021 14:35
HRESULT: 0x80040202 when Subcribing to multiple Items
Category: Reading, Writing, Subscriptions
Topic started 29 Apr 2021 16:44, by jgonzalez
Last Post 11 May 2021 16:28
by jgonzalez
Replies:4
Views:2057
Last Post by jgonzalez
11 May 2021 16:28
Reading / writting values via QuickOPC causes RAM usage (GE iFix, VBA)
Category: Reading, Writing, Subscriptions
Topic started 22 Mar 2021 09:00, by bvader
Last Post 24 Mar 2021 09:39
by support
Replies:3
Views:2058
Last Post by support
24 Mar 2021 09:39
Send a command to the OPC-UA machine for creation of a new order/job
Category: Reading, Writing, Subscriptions
Topic started 27 Nov 2020 13:24, by albi.majun.1960@gmail.com
Last Post 12 Dec 2020 10:22
by support
Replies:4
Views:2526
Last Post by support
12 Dec 2020 10:22
Tag update takes around 2 to 3 seconds!!
Category: Reading, Writing, Subscriptions
Topic started 14 Sep 2020 06:22, by satheesh92
Last Post 14 Sep 2020 08:49
by support
Replies:1
Views:1328
Last Post by support
14 Sep 2020 08:49
Read Tags each n seconds
Category: Reading, Writing, Subscriptions
Topic started 10 Feb 2020 23:51, by alr1976
Last Post 11 Feb 2020 07:18
by support
Replies:1
Views:1991
Last Post by support
11 Feb 2020 07:18
Read problem
Category: Reading, Writing, Subscriptions
Topic started 05 Feb 2020 18:07, by Boris
Last Post 05 Feb 2020 19:20
by support
Replies:1
Views:1711
Last Post by support
05 Feb 2020 19:20
OutOfMemoryException in PullMultipleDataChangeNotifications results
Category: Reading, Writing, Subscriptions
Topic started 30 Jan 2020 18:25, by Boris
Last Post 05 Feb 2020 17:35
by Boris
Replies:4
Views:3263
Last Post by Boris
05 Feb 2020 17:35
ReadMultipleValues exception
Category: Reading, Writing, Subscriptions
Topic started 29 Jan 2020 15:05, by Boris
Last Post 05 Feb 2020 17:30
by Boris
Replies:11
Views:3606
Last Post by Boris
05 Feb 2020 17:30
Writing ByteString
Category: Reading, Writing, Subscriptions
Topic started 13 Jun 2019 10:05, by federica
Last Post 10 Jul 2019 09:13
by federica
Replies:6
Views:3355
Last Post by federica
10 Jul 2019 09:13
How to use UnsubscribeMultipleMonitoredItems in Delphi?
Category: Reading, Writing, Subscriptions
Topic started 04 Feb 2019 10:59, by alr1976
Last Post 11 May 2019 12:31
by support
Replies:16
Views:5459
Last Post by support
11 May 2019 12:31
How to get the source data type?
Category: Reading, Writing, Subscriptions
Topic started 20 Dec 2018 17:36, by Boris
Last Post 21 Dec 2018 15:12
by support
Replies:3
Views:2214
Last Post by support
21 Dec 2018 15:12
Problems Writing and Reading Values
Category: Reading, Writing, Subscriptions
Topic started 26 Oct 2018 10:11, by Alessandro Tessari
Last Post 28 Oct 2018 06:40
by support
Replies:1
Views:2664
Last Post by support
28 Oct 2018 06:40
Time to create page: 0.073 seconds