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©2017 Guangzhou ZHIYUAN Electronics
Date: 2017/03/09
User Manual
V1.00
Guangzhou ZHIYUAN Electronics Co., Ltd.
Industrial high performance CAN interface card
USBCAN-4E-U User Manual
4
Chapter
Chapter
4:
4:
Frequently
Frequently
Asked
Asked
Questions
Questions
1. In the ZLGCANTEST test software, why show “Fail to start the device”?
The reason for this type of failure is that the USBCAN-E/2E-U device driver is not
installed properly. Check the USBCAN-E/2E-U device properties in the “System” of
the PC control panel to see if there is a “!” Or “?” in front of the USBCAN-E/2E-U
device; if so, check the hardware/software confliction, and reinstall the USBCAN
device driver.
2. Do you need to use a 120Ω terminal resistance?
It is recommended that the 120Ω terminal resistance is used to absorb endpoint
reflections and provide a stable physical link. When the self-transmittng and
self-receiving of a single node is implemented, the 120Ω terminal resistance must be
connected to constitute a loop, otherwise the self-transmitting and self- receiving test
can not be implemented. The USBCAN-E/2E-U high-performance CAN interface card
does not have a built-in 120Ω terminal resistance. If the terminal resistance is needed
to connect in networking, users should add with a 120Ω terminal resistance
externally.
3. Can multiple USBCAN-4E-U interface cards be installed in a computer?
The interface with old version does not support multi-card operation at the same time,
but the current USBCAN-4E-U interface card supports the simultaneous operation
with up to eight PC-CAN interface cards of the same model.
4. What is the maximum data conversion rate for the USBCAN-4E-U interface card?
The single CAN channel of the USBCAN-4E-U interface card supports the CAN bus
data conversion rate of up to 5000 fps. The frame here refers to the data frame of the
extended frame, which may be faster if it is a standard frame or a remote frame. In
addition, the maximum data traffic will be limited by PC performance.
5. Why does the CAN state indicator turn off?
Because all operations of the USBCAN4E-U interface card are controlled by the PC,
the CAN state indicator will be meaningful only if the PC has sent a command to start
CAN communication.
6. Why system operation is illegal when calling interface functions?
First of all, read the function description carefully when using interface functions,
ensure that the input parameters are proper, pay special attention to the pointer
(address) delivery, or refer to the provided examples. If the problem is still unable to
solve, you can contact our technical support.
