Data type attribute

The data type ( pointtype) attribute specifies what type of data is stored in the PI point.

Example data types are strings, integers, and digital values. Unless the interface documentation specifies otherwise, only string and blob type data can be saved to a string PI point. UniInt does not convert integer, float, or digital values to string values.

Device data types do not need to match PI point data types exactly, but the data types must be compatible. For example, integer values from a device can be sent to floating-point or digital PI points. Similarly, a floating-point value from the device can be sent to integer or digital PI points, although the values might be truncated.

To determine which data types are supported by an interface, refer to the interface documentation.

For details about Data Archive data types, refer to the PI Server Management Guide.