Rockwell Automation 20-COMM-L LonWorks Adapter - Manual (Page 51)

Configuring the LonWorks Network 4-19
20-COMM-L LonWorks Adapter User Manual
Publication 20COMM-UM008B-EN-P
Error Handling
If nciRcvHrtBt is larger than zero, and heartbeats are not received within the
nciRcvHrtBt time, then communication with the LonWorks network is
considered down. The adapter response to loss of communication depends
on the setting of adapter Parameter 6 - [Comm Flt Action].
See Chapter 5 , Troubleshooting for more information on potential problems
with the adapter and network.
Resource Files LonMark resource files define the components of the external interface for a
LonWorks
device. These files allow installation tools and operator interface
applications to interpret data produced by a device and to correctly format
data sent to a device. They also help a system integrator or system operator
to understand how to use a device and to control the LonMark objects on a
device.
The LonWorks module uses three types of resource files:
• Type File (uses a ‘.TYP’ file extension) - Defines network variable,
configuration property, and enumerated types. LonMark standard
network variable and configuration property types are defined in the
STANDARD.TYP file.
• Functional Profile Template (uses a ‘.FPT’ file extension) - Defines
functional profiles that are used for describing LonMark objects. A
functional profile specifies the mandatory and optional network variable
and configuration property components of a LonMark object. LonMark
standard functional profiles are defined in the STANDARD.FPT file.
• Format File (uses a ‘.FMT’ file extension) - Defines display and input
formats for network variable and configuration property types defined in
a type file. Formats for the LonMark standard network variable and
configuration property types are defined in the STANDARD.FMT file.
In addition to the resource files, the following file types are also used:
• Language File - Defines language-dependent strings. There is a separate
language file for each supported language. The supported language file
determines the extension of a language file. Two language files are
presently available for the LonMark standard type files; these are
STANDARD.ENU for American English and STANDARD.ENG for
British English.
• XIF File - Defines the external interface for a LonWorks device. This
file contains self-documentation information, number of address table
entries, number of message tags, and the number, types, and directions of
network variables.
The resource files and XIF file are shipped with the LonWorks module on
digital media.