Engineering Bulletins
Echelon's Engineering Bulletins provide architectural and design information on wide range of circuit, device, and system-related topics. Typical subjects include external memory and serial interfaces for Neuron Chips, power line system designs for demand side management applications, twisted pair wire specifications for the TP/FT-10 channel, mean time between failure analyses of Echelon products, and the standard method for implementing file transfers in LonWorks networks.
Audio | Custom Node Design | Gateways
| Input/Output | LonWorks Protocol |
Media & Wiring | Power Line
| Pyxos | Series 5000 | Miscellaneous
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| Document Title |
Contents |
Part Number |
| Determinism in Audio Computer Control Network Applications | This paper deals with the importance
of response time, and the unimportance of determinism, as elements
in audio control networks. |
|
| LonWorks for Audio Computer Control Network Applications | Describes how to use LonWorks
technology to build intelligent audio products. |
Document Title |
Contents |
Part Number |
| LonWorks Custom Node Development |
Describes steps needed to design and test a LonWorks
custom node. Includes hints and advice to help speed the process of
designing these nodes. Also lists pitfalls to avoid. |
|
| Neuron 3150 Chip External Memory Interface |
Describes interface and timing requirements for the
memory bus of the Neuron 3150 Chip. |
Document Title |
Contents |
Part Number |
| Building a LonTalk-to-PLC Gateway |
Describes a general approach for building
a gateway between a Programmable Logic Controller and a LonTalk network,
with specific examples coming from a gateway implemented between a
LonTalk network and an Omron PLC. |
Document Title |
Contents |
Part Number |
| Analog-To-Digital Conversion With the Neuron Chip |
Describes some of the more popular analog to digital
(A/D) conversion schemes available for use with the Neuron Chip. Provides
schematics, parts lists and code examples. |
|
| Driving a Seven Segment Display with the Neuron
Chip |
How the Neuron Chip can be used to drive a seven-segment
display controller chip, the Motorola MC14489, using the Neurowire
device. Includes Neuron C software drivers to display decimal numbers
from binary data. |
|
| EIA-232C Serial Interfacing with the Neuron Chip |
Describes a simple level conversion
circuit to allow the Neuron Chip to communicate with RS-232C devices.
Also includes Neuron C software to drive an RS232C CRT terminal. |
|
| Neuron Chip Quadrature Input Function
Interface
|
Describes the use of the quadrature device
in the Neuron Chip to interface to external devices such as shaft
encoders. |
|
| Parallel I/O Interface to the Neuron
Chip |
Describes hardware and software to interface
the Neuron Chip to a microprocessor using the parallel I/O port. |
|
| Scanning a Keypad with the Neuron Chip
|
Describes how the Neuron Chip can be used to scan a
simple 16-key switch matrix to provide a numeric or special-function
keyboard without the use of a keyboard encoder. |
|
| Using the Hardware Serial Peripheral Interface (SPI) and Neurowire I/O Object Models to Interface with Peripherals and Microcontrollers |
Describes communications between Smart Transceivers or Neuron Chips and other microcontrollers for designs that intend to make use of the SPI interface for simpler applications and also for understanding how the SPI interfaces are implemented in the Smart Transceivers and Neuron Chips. Neuron C code examples of an SPI interface are explained in this engineering bulletin, and the source code is available for download. |
Document Title |
Contents |
Part Number |
| File Transfer |
Describes the standard method of exchanging large amounts
of data between nodes in a LonWorks network. |
Document Title |
Contents |
Part Number |
| Junction Box and Wiring Guidelines for Twisted Pair
LonWorks Networks |
Identifies the different types of junction
boxes and interconnections that can be used in twisted pair LonWorks
networks in building and industrial control applications. |
|
| LonWorks 78Kbps Self-Healing Ring Architecture |
Describes the benefits and limitations of two wiring
methods for the TP-78 channel: bus and loop. The design of an intelligent
switch for loop-wired systems is discussed. |
Document Title |
Contents |
Part Number |
| Centralized Commercial Building Applications with
the PLT-21 Power Line Transceiver |
The LonWorks PLT-21 power line technology in medium
to large commercial installations using centralized architecture.
The role of twisted pair backbones and network routers is discussed.
|
|
| Data Logging with the PLCA-22 Power Line Communications
Analyzer |
The PLCA-22 Power Line Communications Analyzer provides
a simple, cost-effective method of field testing the operation of
Echelon's multi-frequency, CENELEC EN50065-1 and EIA 709.2 compliant,
power mains communication technology. |
|
| Demand Side Management with LonWorks Power Line
Transceivers |
The use of LonWorks for residential DSM applications,
an overview of DSM systems, a description of the transceiver, a review
of wiring in a typical North America residence, and a detailed analysis
of coupling circuits for a power line signal. |
Document Title |
Contents |
Part Number |
| Pyxos™ FT Platform Interoperability | This bulletin explains network variable exchanges in a Pyxos FT network. |
Document Title |
Contents |
Part Number |
| Connecting a Neuron® 5000 Processor to an External Transceiver | This Engineering Bulletin describes how to connect a Neuron 5000 Processor’s communications port to external transceivers for TP/XF-1250 channels or for EIA-485 networks, using an external transceiver circuit. It also describes how to connect a Neuron 5000 Processor to a link-power TP/FT-10 channel using a LonWorks LPT-11 Link Power Transceiver. |
Document Title |
Contents |
Part Number |
| Firmware Version Numbers for Neuron Chips and Smart Transceivers | This document summarizes the firmware version numbers found in Neuron Processors and Smart Transceivers by vendor | |
| Echelon FT 3120 and FT 3150 Free Topology Smart Transceiver Lightning Protection Technical Bulletin | This documents outlines updates to certain specifications pertaining
to lightning protection outlined in the FT 3120 / FT 3150 Smart Transceiver
Data Book. |
|
| Design Practices for Using a LonWorks Free Topology Channel on Trains | This bulletin discusses LonWorks TP/FT-10 free topology channel networks on trains and is a
companion piece to Echelon's free topology user's guides and data books. |
|
| LonWorks Control Products Environmental Specifications and MTBF Guide | Summarizes the environmental specifications
of control products, mean time between failure (MTBF) statistics,
and safety agency file numbers. |
|
| Understanding the Neuron® Firmware Address Table | This bulletin describes the purpose of the address table, explains how this valuable resource is being used and explains how device manufacturers and integrators can control and optimize its use. | |
| Usage Guidelines for Echelon Trademarks |
This document outlines the proper use
of Echelon's trademarks in printed and electronic media. Contact Echelon directly for questions and permission about the use of Echelon's logos. |