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WinCC Unified as OPCUA-Client

Created by: MrAlK at: 11/24/2023 8:49 AM (5 Replies)

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11/24/2023 8:49 AM	Rate (0)
MrAlK Member Joined: 9/22/2021 Last visit: 4/14/2025 Posts: 2 Rating: (0)	Hallo everybody. Have anybody find a way to solve this problem? I use BACnet2OPC Server and try to resolve Datatypes in WinCC Unified as OPCUA-Client. But all I can see in Unified are just "BaseDataType" for all variables. ------------------------------------------------------------------------------------------ Split from Wincc unified OPC UA client communication issue.
	Last edited by: The Helping Hand at: 11/24/2023 09:56:32 New subject after splitting
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11/27/2023 11:29 AM	Rate (0)
Murof Platinum Expert Joined: 8/3/2009 Last visit: 9/3/2025 Posts: 16322 Rating: (1931)	Hello MrAlK Which Version of WinCC Unified do you use exactly? Do you have tested if you can access the user defined datatypes with a OPC UA Test Client like the UAExport? bye Murof
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11/28/2023 2:42 PM	Rate (0)
MrAlK Member Joined: 9/22/2021 Last visit: 4/14/2025 Posts: 2 Rating: (0)	WinCC Unified V18 I cant access at the moment the PLC for testing because its in use for other projekt. In UAExpert it was also BaseDataType.
	Last edited by: MrAlK at: 11/28/2023 15:06:41
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2/2/2024 5:24 PM	Rate (0)
theabstrct Member Joined: 2/18/2022 Last visit: 3/27/2024 Posts: 4 Rating: (0)	i am having the same issue. I can access the user datatype from uaexpert but can't use them on wincc unified as a tag. Is there other way to do it

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8/20/2025 8:23 AM	Rate (0)
thongbvt Experienced Member Joined: 4/23/2014 Last visit: 8/20/2025 Posts: 6 Rating: (0)	I have same problem with "BaseDataType". Anyone have a solution? Attachment 1.jpg (7 Downloads)
	Last edited by: thongbvt at: 08/20/2025 08:49:28
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8/21/2025 12:02 PM	Rate (0)
Murof Platinum Expert Joined: 8/3/2009 Last visit: 9/3/2025 Posts: 16322 Rating: (1931)	Hello I thinkk up to now PLC Datatypes are not supported in the WInCC Unified OPC UA client. Since V20 64 Bit datatypes are added and in Upd3 to V20 Arrays are added but I think Userdefined Datatypes should com up with future versions bye Murof
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