Comparison of OPC UA complex data models: Difference between revisions

From OPC Labs Knowledge Base
No edit summary
No edit summary
Line 16: Line 16:
| Compatible with OPC UA PubSub || no || yes
| Compatible with OPC UA PubSub || no || yes
|-
|-
| Example || Example || Example
| || ||  
|-
|-
| Example || Example || Example
| || ||  
|-
|-
| Example || Example || Example
| || ||  
|-
|-
| Example || Example || Example
| || ||  
|-
|-
| Example || Example || Example
| || ||  
|-
|-
| Example || Example || Example
| || ||  
|-
|-
| Example || Example || Example
| || ||  
|-
|-
| Example || Example || Example
| || ||  
|-
|-
| Example || Example || Example
| || ||  
|-
|-
| Example || Example || Example
| || ||  
|-
|-
| Example || Example || Example
| Supported in QuickOPC || Version 2018.1 and later || Client-Server: Version 2020.2 and later
|-
| Example || Example || Example
|-
| Example || Example || Example
|}
|}

Revision as of 20:58, 21 March 2020

OPC UA offers two complex data models. They do not have "official" names, but the historically first one is based on the DataTypeDictionary type, and the second one is based on the DataTypeDefinition type. We will therefore usually refer to them as "DataTypeDictionary model" (or "data type dictionary model"), and "DataTypeDefinition model" (or "data type definition model").

The table below summarizes the main difference between the two models.

DataTypeDictionary Model DataTypeDefinition Model
OPC UA version 1.00 and later (deprecated in 1.04 and later, but still available) 1.04 and later
Described in OPC UA Specification Part 5 (Information Model) OPC UA Specification Part 3 (Address Space Model)
Compatible with OPC UA Client-Server yes yes
Compatible with OPC UA PubSub no yes
Supported in QuickOPC Version 2018.1 and later Client-Server: Version 2020.2 and later
Retrieved from "https://kb.opclabs.com/index.php?title=Comparison_of_OPC_UA_complex_data_models&oldid=2807"