User`s guide

DC 900-1339H 35
Chapter
3
FMP DLI Functions
Note
In this document, the term “Freeway” can mean either a Freeway
server or an embedded ICP. For the embedded ICP, also refer to
the user’s guide for your ICP and operating system (for example,
the ICP2432 User’s Guide for Windows NT).
This chapter describes how to use the data link interface (DLI) functions to write client
applications interfacing to the Freeway FMP protocol software. You should be familiar
with the concepts described in the Freeway Data Link Interface Reference Guide ; how-
ever, some summary information is provided in Section 3.1.
The following might be helpful references while reading this chapter:
• Section 3.2 compares a typical sequence of DLI function calls using blocking ver-
sus non-blocking I/O.
• Appendix C explains error handling and provides a summary table for FMP error
codes. The Freeway Data Link Interface Reference Guide gives complete DLI error
code descriptions.
• The Freeway Data Link Interface Reference Guide provides a generic code example
which can guide your application program development, along with the pro-
grams described in Appendix D of this manual.