Hello.

We have tested with this version.
We could not reproduce the problem.

Regards
 

Hello,
You can download OPCDA  Server v. 3.5.10.20 from CodeSys web site  CODESYS Development System V3 | CODESYS Store International
 

Unfortunately such version is not available on  store.codesys.com/en/codesys-opc-da-server-sl.html .

What should we use?

Currently available are:VersionRelease NotesRelease Date
3.5.22.40Includes the following Security fixes: 2026-11 30.09.2026
3.5.22.30-23.07.2026
3.5.22.20-20.05.2026
3.5.22.10-02.04.2026
3.5.22.0-24.03.2026
3.5.21.60-22.04.2026
3.5.21.40Includes the following Security fixes: 2025-09 , 2025-10 , 2025-11 01.12.2025
3.5.21.30-25.09.2025
3.5.21.20-04.08.2025
3.5.21.10-26.05.2025
3.5.21.0-18.03.2025
3.5.20.70-21.05.2026
3.5.20.60-22.04.2025
3.5.20.50-23.01.2025
3.5.20.40-20.11.2024
3.5.20.30-23.09.2024
3.5.20.20-31.07.2024
3.5.20.10-04.06.2024
3.5.20.0-19.03.2024
3.5.19.70-02.05.2024
3.5.19.60-06.02.2024
3.5.19.50-04.12.2023
3.5.19.40-23.10.2023
3.5.19.30Includes the following Security fixes: 2023-10 05.10.2023
3.5.19.20-03.08.2023
3.5.19.10-01.06.2023
3.5.19.0-08.03.2023
3.5.18.60-31.10.2023
3.5.18.50-04.05.2023
3.5.18.40-13.12.2022
3.5.18.30-06.10.2022
3.5.18.20Includes the following Security fixes: 2022-10 03.06.2022
3.5.18.0Includes the following Security fixes: 2022-04 06.04.2022
3.5.17.50-28.10.2022
3.5.17.40-10.06.2022
3.5.17.30-25.01.2022
3.5.17.20-02.11.2021
3.5.17.10-23.07.2021
3.5.17.0Includes the following Security fixes: 2020-06 , 2021-01 28.04.2021
3.5.16.60-18.08.2021
3.5.16.50-26.05.2021
3.5.16.20Quality update with minor improvements and bug fixes.Includes the following Security fixes: 2020-06 24.09.2020
3.5.16.10Quality update with minor improvements and bug fixes.22.07.2020
3.5.16.0Includes the following Security fixes: 2019-08 , 2020-02 05.05.2020
3.5.15.40Quality update with minor improvements and bug fixes.Includes the following Security fixes: 2020-02 25.03.2020
3.5.15.30Quality update with minor improvements and bug fixes.23.01.2020
3.5.15.10Quality update with minor improvements and bug fixes.19.09.20193
.5.15.0-29.07.2019
3.5.14.40Quality update with minor improvements and bug fixes.23.08.2019
3.5.14.30Quality update with minor improvements and bug fixes.24.06.2019
3.5.14.0Beside other fixes this is a security update which solves the issues noted in the following advisories:
2018-11 , 2018-14 17.12.2018
3.5.13.30Security update:

• CODESYS V3 TCP communication DoS vulnerability ( Link to Advisory 2018-11 )

18.01.2019
3.5.13.10-23.08.2018
3.5.13.0-10.07.2018
3.5.12.70Security update:

• CODESYS V3 TCP communication DoS vulnerability ( Link to Advisory 2018-11 )

13.11.2018
3.5.12.0-20.12.2017
3.5.11.50-16.02.2018
3.5.21.50-18.02.2026

Regards
 

Hello,
CodeSys OPCDA server version is 3.5.10.20RC

Hello,
CODESYS 3.5 SP19 Patch 7 is the version of CODESYS installed on the customer's system. I will verify the exact version of the OPC DA Server tomorrow

Hello.

Please re-specify the precise CODESYS product and version you are using.

The closest we have found is this one:

CODESYS OPC DA Server SL

Available from  store.codesys.com/en/codesys-opc-da-server-sl.html  
Version: 3.5.19.70

Is it this one, or something else? 
Regards
 

Hello,

current status: Tested with CODESYS V3.15, because that's what we could our hands on quickly. Could not reproduce the issue.
Trying to obtain CODESYS version close to yours. Would be nice if you can get send it to us.

Regards
 

Hello
1. The behavior is 100% consistent: always fails
2. Server is local
3. Tested with Connectivity Explorer and Softing OPC test client. Both clients display property values without error 
4-5. Tested 4 properties (DataType, AccessRights, Value, Quality) on several items - all failed with the same E_NETWORK_ERROR

Updated to version QuickOPC: 5.84.374 - the same error

Hello.

Some questions:

1. Is this consistent behavior (happens always), or does it happen just sometimes?
2. Is the server actually remote, or local?
3. Please clarify "OpcLabs test clients read properties without error" - which clients?
4. Have you tried other properties (not just DataType), and if so, what were the results?
5. Does it happen only on specific OPC items, or on any item?

Regards

Hello,
Environment: 
.NET: 10.0; 
QuickOPC: 5.84.294
OPC DA Server: CODESYS 3.5 SP19 Patch 7

GetDataTypePropertyValue fails with E_NETWORK_ERROR while standard read/write operations to the same server succeed.
Other clients tested: Softing OPC Client and OpcLabs test clients read properties without error from the same server.

Stack Trace: