Echelon OpenLNS - Manual (Page 408)

OpenLNS Programmer's Reference 371
Data Type Single.
Read/Write Read only.
Added to API LNS Release 3.0.
UnitsMultiplier
Summary Determines how the scaled value of the data point or monitor
point will be unit-converted for display as a formatted value
when your application reads the FormattedValue propery .
When your application reads the FormattedValue property of
a data point or monitor point, the OpenLNS Object Server
converts the scaled value of the data point or monitor point
so that it can be display as a formatted value.
To unit-convert the value, LNS first multiplies it by the value
in the UnitsMultiplier property. It then adds the value stored
in the UnitsAdder property. The resulting value will be
appropriate for the units that apply to this format
specification.
Different data formats for the same data type will be on
different scales. For example, the SNVT_temp_f data type
contains the temperature in degrees Celcius. In order to
display the temperature in Fahrenheit, you would have to
multiply the value by 1.8 (9/5), and then add 32.
Availability Local, full, lightweight, and independent clients. Independent
clients can only access FormatSpec objects through monitor
points in permanent monitor sets.
Syntax unitsMultiplier = fsObject.UnitsMultiplier
Element Description
unitsMultiplier The value to be multiplied.
fsObject The FormatSpec object to be acted on.
Data Type Single.
Read/Write Read only.
Added to API LNS Release 3.0.
Interface
An Interface object represents an application device’s external interface, which is the logical
interface to a device. A device’s interface specifies the number and types of functional
blocks; number, types, directions, and connection attributes of network variables; and the
number of message tags. The Interface object can be used both in the context of a particular
program (part of the DeviceTemplate object), a particular application device (part of the
AppDevice object), or a particular network services device (contained within an Interfaces
collection).
The Interface objects contained by an application device may be a device’s main interface, or
they may be custom interfaces that have been added to the device. The main interface of a
device can be accessed through the device’s Interface property. Main interfaces are static