OPC UA Data Types
OPC UA Data Types
CDP supports the following OPC UA variable and method argument data types with corresponding CDP best matching value types:
| OPC UA data type | corresponding best matching CDP value type |
|---|---|
| Boolean | bool |
| SByte | char |
| Byte | unsigned char |
| Int16 | short |
| UInt16 | unsigned short |
| Int32 | int |
| UInt32 | unsigned int |
| StatusCode | unsigned int |
| Int64 | int64_t |
| UInt64 | uint64_t |
| DateTime | uint64_t |
| Float | float |
| Double | double |
| String | string (eg group of channels of different type) |
| ByteString | string (eg group of channels of different type) |
| XmlElement | string (eg group of channels of different type) |
Note: Any CDP value type can be used to access any OPC UA data type - value will be automatically converted, whenever possible. However, to avoid value loss in conversion choose compatible and best matching CDP value type.
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