M.2CANFD
M.2 Interface CAN (FD) Card
©2022 Guangzhou ZLG Electronics Co., Ltd.
9
User Manual
Table 2.1 lists the functions of the indicators. When the indicators are in various states, the
status of the CAN bus is shown in Table 2.2.
Table 2.5 Indicator functions
Indicator
STATUS
Indication status
R
（
RUN
）
Green
System operation instructions
CAN0
Green
The CAN interface is working properly
Red
The CAN interface is faulty
CAN1
Green
The CAN interface is working properly
Red
The CAN interface is faulty
After the M.2CANFD interface card is powered on, the system status indicator RUN is
green, indicating that the device is powered on, and the system is operating properly; if the
system status indicator RUN is off, the system power supply fails or a serious error occurs
in the system.
When the CAN0 and CAN1 indicators are green, the CAN controller has been
initialized and is working properly.
When the CAN controller has an error, the CAN0 and CAN1 indicators are red; when
the error of the CAN controller is cleared, the CAN0 and CAN1 indicators are green.
Table 2.6 CAN bus status
CAN indicator status
CAN bus status
CAN0 and CAN1 indicators are all
off
The CAN controller is disconnected from the bus
CAN0 and CAN1 indicators blink in
red and green alternately
The CAN controller is not started, and the user is prompted to
start the CAN controller
CAN0 and CAN1 green indicators
are always on
The CAN bus is operating properly
CAN0 and CAN1 red indicators
blink
The CAN-bus bus has an error or data overflow, and it may lose
frames
2.7
Board Installation
2.7.1
Precautions
M.2CANFD series interface cards are electrostatic sensitive products and should be
packed in a special anti-static protective bag before delivery. Therefore, when operating
the interface card, take necessary protective measures to ensure that the interface card is
not damaged by human contact with static electricity.
The M.2CANFD interface card should be installed when the PC/industrial computer is
powered off
. Similarly, the interface card should also be disassembled when the
PC/industrial computer is powered off.
Note: Before installation, make sure that the host provides an M.2 B-key or M-Key slot
and supports PCIe.
