ZLG USBCAN-4E-U - 2.3.1 Signal definition of DB9 to OPEN5 connector; 2.4 Signal Indicator; 2.4.1 USBCAN-4 E-U Signal Indicator

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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
Table 2- 3: Signal definition of DB9 to OPEN5 connector
Pin
Signal
Description
Picture
1
V-
Network power negative
2
CANL
CANL signal line
3
CAN_SHIELD
Shielded line
4
CANH
CANH signal line
5
V+
Network power positive
2.4 Signal Indicator
2.4.1 USBCAN-4E-U Signal Indicator
The USBCAN-4E-U interface card contains one yellow power indicator, one
dual-color SYS indicator and four dual-colors CAN interface indicator to indicate the
operating status of device. The functions of these three indicators are described in
Table 2- 4.
Table 2- 4: Indicators on the USBCAN-4E-U interface card
Indicators
Status
Function
PWR
Yellow
Device is powered on.
SYS
Red
Indicates the device initialization status, and the
USB is unconnected.
Green
Indicates USB interface signal.
CAN
CAN indicators
are extinguished
CAN controller is not in use.
The CAN indicator
in green is lit
CAN controller is in use.
The CAN indicator
in green is
blinking
CAN data transmission is normal.
The CAN indicator
in red is lit
The transmission of CAN controller is error.

When the USBCAN-4E-U interface card is powered on, the power indicator is
yellow and the SYS indicator is red to indicate that the device is powered on and
the system is being initialized. Otherwise, it indicates that there is system power
supply fault or serious system error.

After the USB interface is connected properly, the SYS indicator is extinguished
and becomes green and flashes.

When the CAN indicator lights, it indicates the CAN controller has finished
initialization and enters into normal operating status.