USBCANFD-100U-mini
USBCANFD Series CANFD Interface Card User Manual
©2021 Guangzhou ZLG Electronics Technology Corp.,Ltd.
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User Manual
Continued
Pin
Signal
Description
Figure
7
CAN_H
CAN bus is highly dominant
8
--
Reserved
9
--
Reserved
Figure 2.2 CAN interface
2.3 Signal Indicators
USBCANFD-100U-mini has a two-color SYS indicator and a two-color CAN channel indicator that indicate
the operating status of the CAN channel. Figure 2.1 shows the indicator locations, and Table 2.2 describes the
indicators.
Table 2.2 Description of USBCANFD-100U-mini interface card indicators
Indicator
Status
Indication status
SYS
Red
The USB driver is not installed properly
Green
The USB driver is installed
Green flashing
The USB is communicating with the device
Flash in red
USB and device communication error
CAN
Off
The CAN channel is not open
Green
The CAN channel is open
Green flashing
The CAN channel is transmitting messages
Flash in red
CAN channel bus error
2.4 System Connections
When USBCANFD-100U-mini is connected to the CAN-bus, you only need to connect CAN_L to CAN_L and
CAN_H to CAN_H signal. The CAN-bus network adopts a linear topology, and the two terminals of the bus need
to be installed with 120 ohm terminal resistors; if the number of nodes is greater than 2, the intermediate nodes
do not need to install 120 ohm terminal resistors. For branch connections, the length should not exceed 3 meters.
Figure 2.3 shows the connection of CAN-bus bus.
