Registers are skill data points that store a settable value. The register is initialized with a default value, and can be modified by writing to its “value” attribute.

Registers can be used if a value that is written by some external source, like the Xentara Web Service, needs to be accessed later by other components. The value can then be stored in a register, and read back as needed.

Accessing Registers

Registers have the following members:

Attributes

key	The register’s primary key.
name	The register’s name. The name is the last component of the primary key.
UUID	The unique UUID of the register.
type	The register’s element type. For registers, this is always “register”.
category	The register’s category. For registers, this is always “data point”.
value	The current value of the register. This attribute can be written to to change the stored value.
updateTime	The last time a value was written to the register. This attribute is always the same as the writeTime attribute.
writeTime	The last time a value was written to the register. This attribute is always the same as the updateTime attribute.
quality	The quality of the register value. The quality of a register is always “good” and never changes.
changeTime	The last time the value changed. Contrary to the writeTime and updateTime attribute, this time stamp is not updated if the same value is written multiple times.

Events

written	This event is raised whenever the value is written, whether it changed or not.
changed	This event would normally be raised when either the value or the quality changes. Since the quality of a register is always “good”, and never changes, this event is equivalent to the value event.