ZLG PCIeCANFD Series, Руководство пользователя

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PCIeCANFD-200U/100U
PCIeCANFD Series CANFD Interface Card User Manual
©2021 Guangzhou ZLG Electronics Corp.,Ltd.
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User Manual
2. Hardware Interfaces
2.1 CAN Communication Interface
The CAN communication interface of the PCIeCANFD interface card uses a DB9 connector, and the signal
definition of the interface pins meets the requirements of the CiA standard. Table 2.1 lists the signal definition of
the DB9 pin.
Table 2.1 DB9 pin signal definition
Pin Signal Description Figure
1 -- Reserved
2 CAN_L CAN bus dominance is low
3 CAN_GND CAN reference ground
4 -- Reserved
5 CAN_SHLD CAN shield ground
6 CAN_GND CAN reference ground
7 CAN_H CAN bus is highly dominant
8 -- Reserved
9 -- Reserved
2.2 Terminal Resistance
Each CAN channel of PCIeCANFD interface card has built-in 120 ohm terminal resistance. The interface
card connects or disconnects the terminal resistance through a DIP switch. Figure 2.1 shows the position of the
DIP switch. Before product delivery, the terminal resistance is connected by default. The terminal resistance can
be flexibly configured in the actual CAN network.
Figure 2.1 Terminal resistance settings