Ni-Can Software Components; Ni-Can Driver And Utilities - National Instruments NI-CAN User Manual

Chapter 1 Introduction

NI-CAN Software Components

NI-CAN User Manual
example, you can use the write function to transmit a CAN remote frame to
the pushbutton device, then use the read function to retrieve the resulting
CAN data frame. Because the CAN Network Interface Object provides
direct access to the network interface, the write and read functions require
all information about the CAN frame to be specified, including arbitration
ID, whether the frame is a CAN data frame or a CAN remote frame, the
number of data bytes, and the frame data (assuming a CAN data frame).
The CAN Object encapsulates a specific arbitration ID, along with its data.
In addition to providing the ability to transmit and receive frames for a
specific arbitration ID, CAN Objects also provide various forms of
background access. For example, you can configure a CAN Object for
arbitration ID 13 (the pushbutton) to automatically transmit a CAN remote
frame every 500 ms, and to store the data of the resulting CAN data frame
for later retrieval. After the CAN Object is configured in this manner, you
can use the read function to obtain a single data byte that holds the most
recent state of the pushbutton.
The following section highlights important components of the NI-CAN
software, and describes the function of each component.

NI-CAN Driver and Utilities

• A documentation file,
about the NI-CAN software and a description of any new features.
Before you use the software, read this file for the most recent
information.
• A 32-bit, multitasking aware device driver is used to interface with
National Instruments CAN hardware. Under Windows 98/95, this is a
dynamically loadable, Plug and Play aware virtual device driver
(VxD). Under Windows NT, this is a native Windows NT kernel driver.
• A Win32 dynamic link library,
between all CAN applications and the NI-CAN device driver.
• The NI-CAN Configuration utility is used to modify the configuration
of the NI-CAN software. Under Windows 98/95, this utility is
integrated into the Windows Device Manager. Under Windows NT,
this utility is a control panel application.
• The NI-CAN Diagnostic utility is used to verify that the CAN
hardware and software have been installed properly.
, contains important information
readme.txt
nican.dll
1-12
, acts as the interface
ni.com