Echelon i.LON 100 e2 Internet Server - Manual (Page 38)

4.4 i. LON 100 Resource Files
There are many configuration properties you can configure using the SOAP functions
described in this document. This document provides a general description of each property,
and other information you will need when configuring each one, such as minimum and
maximum values for scalar properties, and maximum string lengths for string properties.
This information is also contained in the
i. LON 100 resource files. In order to successfully
send a SOAP message to the i. LON 100, all data in the message must be formatted as
described in this document, and in the resource files.
The
i. LON 100 resource files are added to the LNS resource file catalog by the i. LON 100
Configuration Software installation utility, but they also exist locally on the i. LON 100. In
fact, like LNS, the i. LON 100 maintains a catalog of resource files to use when formatting
data in SOAP messages, network variable updates, and web tag data from the i. LON 100
web server.
You can use the Node Builder Resource Editor, which is included on the
i. LON 100
Installation CD, to create new resource files for your own custom data point types and
formats. Note that when creating custom resource files on a PC, it is common to organize the
files into subdirectories such as:
C:\LonWorks\Types\User\MyCompany\MyResourceFiles.*
However, when adding these files to the i. LON you must FTP them to the following location:
/root/lonworks/types/MyResourceFiles.*
You only need to FTP your own custom resource files to the i. LON. If the name of your file
set is "MyResourceFiles", then you must copy every file which starts with the name
"MyResourceFiles". After you have copied these files to the i. LON you must reboot to be able
to use the new type definitions and formats. During boot the i. LON reads the resource files
in this directory and updates its local catalog accordingly.
4.4.1 LonMark Standard Network Variable Type (SNVT) Device
Resource Files
SNVT device resource files describe the data structures within LonMark SNVTs, and the
formats used to display SNVT data. On the i. LON 100, you can find these files in the
directory
/root/lonworks/types.
They are named
STANDARD.ENU
,
STANDARD.TYP
,
STANDARD.FMT,
and
STANDARD.FPT
.
The default format for a SNVT is its native format, as described in
STANDARD.FMT.
When
you add a data point to the i. LON 100, you will assign that data point a fotmat type. If a
specific SNVT format is desired for a particular data point, the of
that data point must be set the name of that SNVT format. For example:
SNVT_temp_f
The property is described in more detail in Chapter 5, Data
Server. You can browse the entire SNVT device resource files online at
http://types.lonmark.org .
4.4.2 Standard Configuration Property Type (SCPT) Device Resource
Files
This is a set of files that describes the data structures within SCPTs, and also describes the
formats used to display SCPT data. On the
i. LON 100, these files can be found in the
i. LON 100 Internet Server Program 4-8 mer’s Reference