Mapping of PI points data types to OPC UA data types
- Last UpdatedAug 27, 2026
- 1 minute read
The following table provides a reference for PI point and OPC UA data type compatibility, helping you determine how PI point values are represented within OPC UA data sources.
|
OPC UA data type |
PI point data type |
|---|---|
|
Boolean |
Int32 |
|
Boolean HasTypeDefinition: TwoStateDiscreteType |
Digital Digital Set: OPC UA.TwoState.Id |
|
Byte |
Int32 |
|
DateTime |
DateTime |
|
Double |
Float64 |
|
Enumeration |
Int32 |
|
ExpandedNodeId |
String |
|
Float |
Float32 |
|
GUID |
String |
|
Int16 |
Int32 |
|
Int32 |
Int32 |
|
Int64 |
Float64 |
|
Integer |
Float64 |
|
LocalizedText |
String |
|
NodeId |
String |
|
Number |
Float64 |
|
QualifiedName |
String |
|
SByte |
Int32 |
|
StatusCode |
Float64 |
|
String |
String |
|
UInt16 |
Int32 |
|
UInt32 HasTypeDefinition: MultiStateDiscreteType |
Digital Digital Set: OPC UA.MultiState.Id |
|
UInt64 |
Float64 |
|
UInteger |
Float64 |
|
Uint32 |
Float64 |
|
Variant |
Based on its actual data type |