CANDTU-200UWGR
CAN Bus Message Recording and Wireless Data Transmission Equipment User Manual
©2021 Guangzhou ZLG Microelectronics Technology Corp.,Ltd.
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User Manual
By using the configuration tool, the switch input interface can be configured as timing
recording mode and analog key-pressing mode.
1) The timing recording mode is used to regularly collect the switching status of external
equipment, such as valve closing and opening, motor start and stop, and contact
connection and disconnection. Figure 3.3 shows the connection diagram.
2) Simulate button mode can be used to simulate on-board buttons, including message
marking, pause recording, resume recording, and user upgrades.
3.3.4 CAN-bus Interface
The device provides two isolated CAN-Bus interfaces. The physical form of the
interface is a DB9 terminal. Table 3.11, Table 3.12, and Table 3.13 list the interface
schematic diagram, signal definition, and interface specification.
Table 3.11 CAN Interface
Type
Schematic Diagram
Pin description
DB9, pin
2
:
CAN0_L
3
:
CAN0_GND
5
:
CAN0_SHIELD
6
:
CAN0_GND
7
:
CAN0_H
2
:
CAN1_L
3
:
CAN1_GND
5
:
CAN1_SHIELD
6
:
CAN1_GND
7
:
CAN1_H
Table 3.12 Flange terminal signal definition
Function
interface
Signal
definition
Signal description
CAN
CAN_L
CAN data transceiving
differential inverted signal
CAN_GND
CAN isolated ground
CAN_H
CAN data sending and
receiving differential positive
phase signal
CAN_SHIELD
CAN shield ground