Echelon DM-21 Device Manager - Manual (Page 105)

Device Manager User’s Guide G-3
device, routers, channels, default configuration properties, timing
parameters, network variable and message tag connections, polling
intervals, bound connections, and subsystems. The LonMaker tool
combines the information from multiple pages of a Visio drawing into a
single LNS database.
Location String A six byte area of the Neuron Chip’s internal EEPROM. The installer
can initialize this string using a network tool, or it can be initialized by
the application running in the Neuron Chip.
It is critical that each device managed by a Device Manager is uniquely
identifiable by reading a combination of device program IDs and
Location Strings. The Device Manager uses these two resources to
identify which entry in the Managed Device List corresponds to the
devices it finds.
LonMaker for
Windows
Integration Tool
The LonMaker for Windows Integration Tool is a software product
supplied by Echelon. Based on two well-established standards, LNS
and Visio
™ Technical, the LonMaker for Windows Integration Tool
software package combines Visio’s drawing capabilities with the
networking capabilities of LNS. A L
ON W ORKS network is created by
dropping devices onto a page and dragging connections between those
devices.
L ON W ORKS
Device
A device that communicates on a L ON W ORKS network and uses the
LonTalk protocol as defined by Echelon.
Managed Device
List
The Managed Device List is a subset of the information contained in an
LNS database. This subset is loaded into the Device Manager module
using the Device Manager Loading Wizard. The Device Manager uses
the information in this list to manage its devices.
Network
Variable
L ON W ORKS devices communicate through the use of network
variables. Each Neuron Chip-based device can have up to 62 network
variables. A host processor based device that communicates to a
Neuron Chip via Echelon’s Microprocessor Interface Program (MIP) or
Network Services Interface firmware (NSI) may have up to 4096
network variables.
Network Tools such as the LonMaker for Windows Integration Tool can
be used to connect the output network variable on one device to an
input network variable on another device.
Every network variable represents a path through which data can flow
into or out of a device via the network. All network variables are
defined as either input or output, which determines whether the
network variable handles data going into, or out of, the device.
Program ID An area in the internal EEPROM of the Neuron Chip used to store a
manufacturer ID, device class, device subclass, and model number for a