NodeUtil Node Utility ReadMe File
Release 2.21, September 2010

Copyright © 1994 – 2010 Echelon Corporation
All Rights Reserved

1       Overview

This document describes how to use the NodeUtil Node Utility.  NodeUtil is a Windows console application that can be used with Echelon’s family of network interfaces (including the PCLTA-20, PCLTA-21, PCC-10, i.LON® 10, i.LON 100, i.LON 600, SmartServer, SLTA-10, U10, and U20 network interfaces) to diagnose and configure LonWorks® network interfaces, routers, and devices.

NodeUtil is a test and diagnostic tool—it is not a network management tool.  It will not assign destination addresses or bind network variables.  Nor will it format LonMark® interoperable device information.  A large number of LNS® based network management, diagnostic, monitoring and control tools are available; a directory of LNS based tools is available at  A popular LNS based network engineering tool is the LonMaker® Integration Tool; see for more information.  NodeUtil runs on top of OpenLDV™ 3.3C or higher.  The OpenLDV driver is included with the LNS Turbo Edition and the LonMaker Integration Tool Turbo Edition, and is available for royalty-free download from

Additional information and updates, including critical updates, may be available in Echelon’s Downloads web page at

NodeUtil is provided as an unsupported software tool intended for advanced LonWorks device developers and integrators.

2       Contents

1        Overview.. 1

2        Contents. 1

3        Requirements. 2

3.1       PC Hardware Requirements. 2

3.2       PC Software Requirements. 2

4        Changes in this Release. 3

4.1       Release 2.21. 3

4.2       Release 2.17. 3

4.3       Release 2.10. 3

4.4       Release 2.08. 3

4.5       Release 2.07. 4

4.6       Release 2.06. 4

4.7       Release 2.05. 4

4.8       Release 2.04. 4

4.9       Release 2.03. 4

4.10         Release 2.02. 4

4.11         Release 2.01. 4

4.12         Release 2.00. 4

4.13         Release 1.97. 4

4.14         Release 1.96. 5

4.15         Release 1.94. 5

4.16         Release 1.93. 5

4.17         Release 1.92. 5

4.18         Release 1.89. 5

4.19         Release 1.88. 5

4.20         Release 1.87. 5

4.21         Release 1.84. 5

5        Getting Started. 5


3       Requirements

3.1      PC Hardware Requirements

The following are minimum requirements:

3.2      PC Software Requirements

The following are minimum requirements:


4       Changes in this Release

This section lists the major changes implemented since NodeUtil 1.84. 

4.1      Release 2.21

4.2      Release 2.17

4.3      Release 2.10

4.4      Release 2.08

4.5      Release 2.07

4.6          Release 2.06

4.7      Release 2.05

4.8      Release 2.04

4.9      Release 2.03

4.10 Release 2.02        

4.11 Release 2.01

4.12 Release 2.00

4.13 Release 1.97

4.14 Release 1.96

4.15 Release 1.94

4.16 Release 1.93

4.17 Release 1.92

4.18 Release 1.89

4.19 Release 1.88

4.20 Release 1.87

4.21 Release 1.84

5       Getting Started

To install NodeUtil, follow these steps:

  1. Install OpenLDV 3.3C or newer if you do not already have it.  You can download OpenLDV from
  2. If you are using an Echelon network interface that needs a driver in addition to the OpenLDV driver, verify that you have installed that driver.  The OpenLDV ReadMe lists the network interfaces that require separate drivers.
  3. Configure your network interface driver if required.  See the documentation for your selected network interface for details. 
  4. Install StdXcvr.xml if you do no already have it.  This file is automatically installed by many applications including the LonMaker Integration Tool, NodeBuilder® Development Tool, NodeBuilder Resource Editor, and ShortStack Developer’s Kit.  If you have it installed, it will be in your LonWorks Types directory.  This directory is C:\LonWorks\Types by default, but you may have changed the location of your LonWorks directory when you installed your first LonWorks tool.  If you do not have a StdXcvr.xml file in your LonWorks Types directory, download the file from the Design Guidelines page that you can reach from

To start NodeUtil, follow these steps:

  1. Open a Windows command prompt by clicking Start, pointing to All Programs, pointing to Accessories, and then clicking Command Prompt.  Set the path to the folder containing NodeUtil and then start NodeUtil as described in the next section.  Alternatively, you can create a shortcut for NodeUtil that sets the starting directory to the directory containing NodeUtil.  Your shortcut can also specify the command line options as described in the next section.
  2. NodeUtil starts, displays a sign-on message, and displays a menu of commands.  If there is any problem in opening the network driver, NodeUtil displays error messages and exits back to the command prompt.  If this happens, check that the network driver is loaded correctly, that you have OpenLDV 3.3C or higher installed, and that your network interface hardware is correctly configured.  If NodeUtil succeeds in opening the network driver, it displays a message similar to the following:

Echelon Node Utility Release 2.21
Received uplink local reset
Successfully installed TP/FT-10 network interface.
Welcome to the Echelon Node Utility application.
Activate the service pin on remote device to access it.
Enter one of the following commands by typing the indicated letter

This is followed by the NodeUtil Main menu.  See the NodeUtil Node Utility User’s Guide (078-0438-01A) for a description of the main menu and device menu commands.