Controller Area Network (CAN) Interfaces
NI CAN Series 2 Interfaces for PCI, PXI, and PCMCIA
• Hardware timing and synchronization
with NI data acquisition, vision,
and motion devices
Operating Systems
• Windows 2000/NT/XP/Me/98
• LabVIEW Real-Time
• 100% bus load; for up to 1 Mb/s
• ISO 11898-compliant for standard
(11-bit) and extended (29-bit)
arbitration IDs
Recommended Software
• LabVIEW
• LabWindows/CVI
• Philips SJA1000 CAN controller
• Available in high-speed,
low-speed/fault-tolerant,
and single-wire versions
• Hardware timestamping
• Intel 80386EX microprocessor
for timed CAN frame transfer
• Optical isolation up to 500 V
• Import Vector database files
with NI-CAN
Other Compatible Software
• C/C++
• Visual Basic 6
Application Software (included)
• Bus monitor utility
Driver Software (included)
• NI-CAN
Overview
cables to take advantage of synchronization. For PCI boards, you can
CAN interfaces meet the physical and electrical requirements for in- use a RTSI bus cable to share the signals. For PCMCIA-CAN, a
vehicle automotive networks based on CAN. All CAN interfaces synchronization cable connects external timing and triggering signals
include NI-CAN device driver software, with which you can import to the card to achieve synchronization between PCMCIA-CAN and
CAN channels from Vector database files or create them in an PCMCIA, USB, or PCI data acquisition hardware.
easy-to-use utility and program using a high-level API. With a
National Instruments CAN interface and NI-CAN software, you can use LabVIEW Real-Time Compatibility
a desktop, industrial, or notebook PC running Windows for a variety PCI and PXI CAN hardware works with LabVIEW Real-Time running
of CAN applications, including automotive testing and diagnostics, on a PC or a PXI controller for deterministic control.You can download
prototype design, factory automation, and machine control.
your existing NI LabVIEW application to the target without specialized
real-time OS programming knowledge. The real-time performance and
synchronization mean you can use a standard PC or PXI chassis for
CAN Bus and Analog Data Synchronization
Recent advances in automotive test applications demand tighter applications such as rapid control prototyping, hardware-in-the-loop
integration of CAN and other measurement devices. In many testing, and data logging.
applications, you need to synchronize the physical parameters
measured in time to correlate the data. You can program this Common Hardware
synchronization in software, but OS latency sometimes introduces All National Instruments Series 2 CAN devices use the Intel 80386EX
unacceptable delays for certain automotive test applications. microprocessor to handle communications directly on the interface
National Instruments CAN, data acquisition, vision, and motion device. The 80386EX provides a dedicated environment for reliable,
boards for PCI are equipped to share timing and triggering signals. high-performance CAN communications protocol stack execution.
In a system, a CAN board can share timing and triggering signals Because acquisition and transmission timing occur on the board,
with data acquisition, image acquisition, or motion control boards, CAN frames are not lost due to OS activity such as hard drive
basing their actions on these signals. Determinism is maintained access, mouse movements, or virus scans. The physical layer of all
between the trigger signal and the desired response because timing National Instruments CAN devices fully conforms to the ISO 11898
and triggering signals are handled in hardware. The host PC software physical layer specification for CAN and is optically isolated to 500 V.
interacts only to retrieve the data once it is acquired or to write You can interface to the CAN bus using a 9-pin male D-Sub (DB9)
new data.
connector. The Philips SJA1000 CAN controller implements typical
Synchronization is available for PXI, PCI, and PCMCIA-CAN ISO 11898 CAN functionality and offers additional functionality to aid
devices. For PXI modules, the timing signals are shared in the PXI in system development, such as listen-only mode, sleep/wakeup mode,
trigger bus on the backplane; therefore, you do not need additional error counter access, and self-reception (echo) mode.
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