Echelon IzoT Commissioning Tool - Manual (Page 25)

• Standard Configuration Property Types (SCPTs, pronounced skipits). SCPTs contain many
common configuration data types. For example, SCPT_location is a configuration property type for
configuration properties containing the device location as a text string.
See types.lonmark.org for a list and description of all SNVTs and SCPTs.
User-defined Standard Network Variable and Configuration Property Types
Applications may use manufacturer-defined non-standard types—user network variable types
(UNVTs) and user configuration property types (UCPTs)—which are defined in user resource files.
Device manufacturers may provide additional resource files that define these types. See the
NodeBuilder Resource Editor User’s Guide for additional information on creating or using these files.
Subsystems
Devices, routers, and functional blocks are contained in subsystems. With the IzoT Commissioning
Tool, each subsystem corresponds to one page within an OpenLNS CT drawing. Subsystems allow
you to place devices, routers, and functional blocks onto separate pages for organizational purposes.
You may also nest subsystems in other subsystems, allowing you to create a subsystem hierarchy for
large networks. For example, a network may consist of HVAC, lighting, security, and operator
subsystems. These may be further divided into subsystems for each floor, and each floor divided into
subsystems for each room.
Supernodes
Using the IzoT Commissioning Tool, you can also use subsystems to create supernodes. A supernode
is a subsystem with its own network variable interface. You can use supernodes to organize groups of
devices into logical units and to hide complex subsystem details, exposing only the most important
network variables. This structure reduces errors and decreases the time required for network
engineering and commissioning. A network variable interface for a supernode may contain any
network variable on any device functional block found within the supernode or in any of its nested
subsystems.
Visio Basics
The IzoT Commissioning Tool is built on the Visio drawing tool to provide a robust technical drawing
environment for network design. An OpenLNS CT drawing consists of one or more drawing files, and
each drawing file contains multiple subsystems that are each displayed on individual Visio pages. The
Visio documentation provides detailed descriptions of Visio commands and capabilities.
Two key Visio concepts are shapes and stencils. Shapes are reusable drawing objects. A shape may
represent a simple drawing object such as a line, arc, circle, or square, or it may represent a complex
drawing object with special behavior such as OpenLNS CT SmartShapes

. OpenLNS includes
SmartShapes for subsystems, application devices, functional blocks, network variables, message tags,
connections, routers, and channels.
To simplify finding and reusing shapes, Visio defines a special type of drawing called a stencil. A
shape contained on a stencil is called a master shape. When you drag a master shape from a stencil to
one of your drawing pages, Visio automatically makes a copy of the master shape on your drawing and
leaves the master shape unchanged on the stencil.
You can create custom master shapes and stencils for any set of OpenLNS CT SmartShapes. For
example, the IzoT Commissioning Tool includes custom master SmartShapes and a custom stencil for
SmartServer devices and functional blocks. You may wish to create your own custom master
SmartShapes and stencils to speed up network design. See Chapter 12, Creating and Using Custom
OpenLNS CT Master SmartShapes, for more information.
To simplify access to your most commonly used stencils and drawing options, Visio defines another
type of drawing called a template. Templates are drawings that may be used as the starting point when
IzoT Commissioning Tool User’s Guide 9