Low-Speed Controller Area Network (CAN) Interfaces
National Instruments Corporationstruments Low-Speed CAN interface boards fully comply with the ISO 11519 specification and are available in three formats. The PCMCIA-CAN/LS is a PCMCIA Type II card that is fully compliant with the PC Card standard. The PCI-CAN/LS is a short PCI board, and the PXI-8460 is a 3U module, compatible with the PXI/CompactPCI instrumentation standard.
National Instruments Corporationstruments new Low-Speed CAN interface boards are similar to high-speed CAN interface boards in that they are primarily used in the automotive industry for communicating with in-vehicle electronic control modules. However, the Low-Speed CAN bus connects "comfort" type modules such as power windows or power door locks where as the high-speed CAN bus is typically used for anti-lock braking systems or power steering control modules.
The maximum baud rate of Low-Speed CAN is 125 Kbits/s compared to 1 Mbit/s for high-speed CAN. In addition, National Instruments Corporationstruments Low-Speed CAN uses the Philips TJA 1053 fault-tolerant CAN transceiver. This allows Low-Speed CAN to continue operations under a variety of adverse conditions such as faulty nodes or even partially cut cables.
The Low-Speed CAN interface boards ship with National Instruments Corporationstruments NI-CAN software. NI-CAN includes device drivers for application development and firmware that runs on the embedded processors of the Low-Speed CAN boards. NI-CAN also provides flexible yet easy-to-use functions for configuring I/O on CAN networks.
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