GY784X PCI-CAN bus interface card is a CAN bus card with PCI interface and 2 channels or 1 channel CAN interface, which can be bidirectionally transmitted. It can be used as a standard CAN node, which is a powerful tool for CAN bus product development, CAN bus equipment testing, data collection and data communication.
This manual introduces the GY784X PCI‑CAN interface card, a PCI‑based board with one or two CAN channels, optical and DC‑DC isolation, and a range of industrial applications such as control, testing and data acquisition. It details the physical layout, connector pinout, and factory configuration options.
The document also covers driver installation, the CANTools software suite, example programming using the provided DLL, and an appendix with CAN 2.0A/B frame formats and register information. This manual is written in Chinese.
| CAN controller baud rate | 10 kbps‑1 Mbps |
|---|---|
| Maximum data throughput | 3000 frames per second |
| Receive buffer capacity | 5000 CAN messages |
| Operating temperature | -20 °C to 85 °C |
| Working current | 120 mA (power < 600 mW) |
| Dimensions | 132 mm × 90 mm |
The GY7841 version has a single CAN channel, while the GY7842 version provides two independent CAN channels.
The driver file required is FPCIT841.sys.
The CAN bus circuitry uses an optical isolation and a DC‑DC power isolation module for strong anti‑interference capability.
A 120 Ω termination resistor is integrated on the board and can be hardware‑selected.