National Instruments 780688-01

The National Instruments part number 780688-01 corresponds to the PXI-8513, a high-performance PXI Controller Area Network (CAN) Interface Module optimized for diverse application development using the NI‑XNET driver. This module features software-selectable CAN interfaces, offering flexibility for various CAN configurations, including onboard transceivers for High-Speed, Low-Speed/Fault Tolerant, and Single Wire CAN, as well as support for external transceivers. It is particularly suitable for applications demanding real-time, high-speed processing of multiple CAN frames and signals, such as hardware-in-the-loop simulations, rapid control prototyping, bus monitoring, and automation control.

The PXI-8513 integrates a device-driven DMA engine, allowing for efficient transfer of CAN frames and signals between the module and user programs while minimizing CPU interruptions. This interface supports multiple physical layer options: the High-Speed CAN configuration utilizes the NXP TJA1041 or TJA1043 transceiver, achieving baud rates from 40 kbps to a maximum of 1 Mbps, while the Low-Speed/Fault-Tolerant CAN option employs the NXP TJA1054A or TJA1055T transceiver, with a maximum baud rate of 125 kbps. For Single Wire CAN functionality, selectable through software, either the NXP AU5790 or the ON Semiconductor NCV7356 transceiver is used, supporting baud rates between 33.3 kbps and 83.3 kbps. The module requires a bus power supply ranging from 8 V to 18 V.

The PXI-8513, identifiable by part number 780688-01, features a single CAN port, distinguishing it from other versions of the product that include two ports. The module is compatible with TTL I/O, includes two input/output front panel sync connectors, and provides seven input/output trigger lines, and one input/output clock line. With a weight of 98 g, the PXI-8513 is an efficient solution for robust CAN communication needs in industrial automation and control systems.