Echelon IzoT NodeBuilder - Manual (Page 278)

L ON W ORKS 2.0 Platform
The next generation of L ON W ORKS products designed to both increase the power and capability of
L ON W ORKS devices, and to decrease the costs of device development and devices.
L ON W ORKS Network
A network of intelligent devices (such as sensors, actuators, and controllers) that communicate with
each other using a common protocol over one or more communications channels.
L ON W ORKS Technology
The technology that allows for the creation of open, interoperable control networks that communicate
with the LonTalk protocol. L
ON W ORKS technology consists of the tools and components required to
build intelligent device and to install them in control networks.
LTM-10A Platform
A complete L ON W ORKS device with downloadable flash memory and RAM that you can use for
testing your applications and I/O hardware prototypes. You can connect a Gizmo 4 I/O Board to the
LTM-10A Platform.
Mandatory Network Variable/Configuration Property
A network variable/configuration property that must be implemented by the functional block, as
specified by the functional profile that the functional block is instantiating.
Monitored Connection
A connector shape or reference connection on which network variable values are displayed and
updated.
Network Interface
A L ON W ORKS device that provides a layer 6 LonTalk interface to an external host computer such as a
computer or a handheld maintenance tool
Network Variable (NV)
Network variables allow a device to send and receive data over the network to and from other devices.
Network variables are data items (such as temperature, the state of a switch, or actuator position
setting) that a particular device application program expects to receive from other devices on the
network (an input network variable) or expects to make available to other devices on the network (an
output network variable).
Network Variable/Configuration Property Types
A network variable or configuration property type defines the structure and contents of the object. A
network variable type can be either a standard network variable type (SNVT) or a user-defined
network variable type (UNVT). A configuration property type can be a standard configuration
property type (SCPT) or a user-defined configuration property type (UCPT)
Neuron 5000 Processor
Echelon’s next-generation Neuron chip designed for the L ON W ORKS 2.0 platform. The Neuron 5000
processor is faster, smaller, and cheaper that previous-generation Neuron chips. The Neuron 5000
processor includes a fourth processor for interrupt service routine (ISR) processing.
The Neuron 5000 processor supports an internal system clock speed of 5 MHz to 80 MHz (using a 10
MHz external crystal). The Neuron 5000 processor includes 16KB of on-chip ROM to store the
Neuron firmware image and 64 KB on-chip RAM (44 KB is user-accessible). The Neuron 5000
processor requires at least 2KB of off-chip EEPROM to store configuration data, and you can use a
larger capacity EEPROM device or an additional flash device (up to 64KB) to store your application
code, configuration data, and an upgradable Neuron firmware image. The Neuron 5000 processor
264 Appendix C: Glossary