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National Instruments NI-9853 C Series CAN Interface Module

The National Instruments-designed NI-9853 (Part Numbers: 780923-01, 779429-01, 780178-01, 780708-01, 199016E-02L) is a fast Controller Area Network (CAN) interface designed specifically for CompactRIO systems. It allows FPGA applications to be developed using the NI-RIO driver. For byte-level CAN frame manipulation, this interface excels at low-level FPGA-based control and triggering activities that are designed using the LabVIEW FPGA Module.

With its two separate CAN ports, the NI-9853 guarantees isolation between ports and other system modules. A Philips SJA1000 controller, which supports both 11-bit and 29-bit identifiers and is fully compatible with CAN 2.0B, is integrated into each port. In addition, the ISO 11898 standard is met by the Philips TJA1041 High-Speed CAN transceiver, which supports baud rates of up to 1 Mbps. The NI-9853 offers two 9-pin male D-Sub connectors for CAN bus interfacing in terms of connections.

Twisted-pair cable is used to link the pins for CAN_H and CAN_L on each port. Furthermore, CAN_H and CAN_L have two common pins (COM) that act as reference points, and an optional shield pin (SHLD) improves signal integrity and EMC performance in noisy situations. The NI-9853 is adaptable to a wide range of industrial conditions because of its conformal coating (part numbers 780178-01 and 780708-01), which provides further protection in corrosive, condensing, and dusty environments.

Part number 779429-01 is the version of the module that is not conformal coated, while part number 780923-01 refers to the board-only version. Tasks requiring precise control and monitoring via CAN networks are well suited for the NI-9853. Because of its FPGA-based architecture, which allows for real-time CAN data processing and manipulation, it can be used in embedded systems development, industrial automation, and automobile testing, among other applications.

Engineers can construct sophisticated control algorithms and initiate reactions with low latency by utilizing its high-speed CAN interface. Moreover, the termination resistor support of the NI-9853 guarantees signal integrity and reduces communication failures, and its isolated CAN ports enable stable communication in multi-node CAN networks.