User`s guide

Specifying Property Information

7-15

Constraint Value Description

bounded Property has both a minimum and maximum value. If you set

the constraint attribute to bounded, you must assign values

to the min and max attributes.

enum Property is an enumerated value. If set, the Property node

must contain one or more EnumConstraintValue nodes. See

“Specifying Enumerated Values” on page 7-15.

inforpositive Value must be positive or infinite

none No constraints

positive Value must be positive

zeroinforpositive Value must be greater than zero or infinite

zeroorpositive Value must be greater than zero

Specifying Enumerated Values

If your property uses enumerated values, you must set the value of the constraint

attribute to enum, the type attribute to string, and create EnumConstraintValue

elements for each enumeration. The EnumConstraintValue nodes are children of the

Property node.

When you create the EnumConstraintValue nodes, you specify two attributes:

• Value ID

• Value name

This example defines the property StrobeEnable. The constraint attribute is set to

enum. The name attribute of the EnumConstraintValue nodes defines the possible

values of this enumeration: on and off.

<Property optional="on"

constraint="enum"

deviceSpecific="true"

name="StrobeEnable"

readOnly="whileRunning"

type="string">

</Property>