Introduction, Related documentation, Device manager – Echelon DM-21 Device Manager User Manual
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DM-20/21 Overview
Introduction
The DM-20 and DM-21 Device Managers are embedded network management
devices. The DM-20 (Model 43201) is designed for embedded applications in
which it is mounted on a motherboard. The DM-21 (Model 43202) is a packaged
assembly designed for installation in a suitable socket.
The DM-20/21 Device Managers provide the following features:
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Automatic installation, fault detection, and device replacement in a
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network with up to 128 devices and one router per Device
Manager;
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Autonomous operation without the use of a local PC once it has been
commissioned with the LonMaker
™
for Windows
®
Integration Tool;
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Records system activity using an internal Flash-based event log: no
additional batteries are required;
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Front panel jack for simple network access;
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Cuts installation and service costs with two-piece design;
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Support for L
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3.1 objects and configuration properties;
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Network variable and message tag support;
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Safety and regulatory agency approval (U.L. Listed, CE Mark, FCC).
Related Documentation
The following Echelon documents are suggested reading:
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PCLTA-10 PC LonTalk Adapter User’s Guide (078-0159-01)
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PCLTA-20 PCI LonTalk Adapter User’s Guide (078-0179-01)
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PCC-10 PC Card User’s Guide (078-0155-01)
•
LonPoint Module Hardware and Installation Guide (078-0167-01)
•
LonPoint Application and Plug-In Guide (078-0166-01)
•
LonMaker for Windows User’s Guide (078-0168-01)
•
Junction Box and Wiring Guidelines for Twisted Pair L
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Networks
(engineering bulletin 005-0023-02)
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FTT-10A Free Topology Transceiver User's Guide (078-0156-01)
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3.1 Application Layer Guidelines
A glossary of L
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terms can be found at the end of this manual.
Device Manager
A Device Manager is an embedded network management device that can install
and replace nodes on a L
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network. It differs from conventional
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network management tools in that it does not make any network
management decisions itself. Rather, it operates from a database created in
advance using the LonMaker for Windows Integration Tool, which provides a rich
set of design and configuration functions. What is left behind is a low cost Device
Manager which manages the network based on instructions loaded from the tool.