Difference between revisions of "Comparison of OPC UA complex data models"

From OPC Labs Knowledge Base
Jump to navigation Jump to search
Line 3: Line 3:
  
 
The table below summarizes the main difference between the two models.
 
The table below summarizes the main difference between the two models.
 +
 +
{| class="wikitable"
 +
|-
 +
! !! 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
 +
|-
 +
| 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
 +
|-
 +
| Example || Example || Example
 +
|-
 +
| Example || Example || Example
 +
|}

Revision as of 20:50, 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
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
Example Example Example
Example Example Example
Retrieved from "https://kb.opclabs.com/index.php?title=Comparison_of_OPC_UA_complex_data_models&oldid=2806"