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iEM3100 / iEM3200 / iEM3300 series user manual Communications via LonWorks
DOCA0005EN-04 63
Chapter 6 Communications via LonWorks
What is in this chapter?
This chapter contains the following sections:
LonWorks communications overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
LonWorks communication implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Standard network variable types (SNVTs) and configuration properties for
reading data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Meter configuration properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Echelon LonMaker plug-in for data display and meter configuration . . . . . . . . . . . . 71
LonWorks communications overview
LonWorks communications is available on the iEM3175, iEM3275 and iEM3375.
The information in this section assumes that you have an advanced understanding of LonWorks
communications, your communications network and the power system that your device is connected
to.
Related topics
• See the LonMark International website at www.lonmark.org for more information on LonTalk
protocol or LonWorks communications.
LonWorks communication implementation
External interface file (XIF)
The variables and configuration properties for the meter are documented in the external interface file
(XIF). The XIF file is loaded onto the meter where your LNS (LonWorks Network Services) software
can download it. You can also download the XIF file from www.schneider-electric.com if you need to
manually add the XIF file to your software.
The LonMaker plug-ins
The plug-ins allow you to configure the meter and view meter data in Echelon LonMaker.
LED indicators for LonWorks meters
The LonWorks meters have two LonWorks status LEDs: the red service LED and the green
communications LED.
Red service LED
This LED provides the status of LonWorks operations.
LED state Description
The LED is off The meter is configured. It may be online or offline.
The LED is flashing The meter is unconfigured but has an application.
The LED is on
• The meter is unconfigured and without an application, or
• There is a defective internal memory issue.