Echelon FTXL - Manual (Page 24)

12 Introduction to FTXL
Figure 4 shows the basic architecture of an FTXL device.
Figure 4. FTXL Architecture
The FTXL Developer's Kit includes the FTXL LonTalk API and a precompiled
library that implements the FTXL LonTalk protocol stack. The kit also includes
source code for additional operating system and hardware APIs that you compile
and link with your application. The FTXL LonTalk API defines the functions
that your application calls to communicate with other devices on a L ON W ORKS
network. The API code provides ANSI C interfaces for the host application.