Supported Data Types
The following table provides a list of data types in Historian and the corresponding ones in the OPC Classic HDA server and the OPC UA HDA server.
|
Data Type in Proficy Historian |
Data Type in the OPC Classic HDA server or the OPC UA HDA server. |
|---|---|
|
Single Integer |
VT_I2&endash; 16 bit signed integer |
|
Double Integer |
VT_I4- 32 bit signed integer |
|
Quad Integer |
VT_I8- 64 bit quad integer |
|
Unsigned Single Integer |
VT_UI2- 16 bit unsigned single integer |
|
Unsigned Double Integer |
VT_UI4- 32 bit unsigned single integer |
|
Unsigned Quad Integer |
VT_UI8- 62 bit quad integer |
|
Byte |
VT_I1 |
|
Boolean |
VT_BOOL |
|
SingleFloat |
VT_R4- 32 bit float |
|
Double Float |
VT_R8- 64 bit double float |
|
Variable String |
VT_BSTR |
|
Fixed String |
VT_BSTR |
|
Date |
VT_DATE |
|
Blob |
VT_BSTR |