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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
Open: When an event is triggered, the relay is opened.
4.2.6 Filtering
Figure 4.14 Filter Settings tab
Figure 4.14 shows CAN hardware filter configuration items. Each CAN channel has a
maximum of eight sets of filtering rules. The filtering rules of each CAN channel are
independent of each other and need to be configured separately.
1) Channel selection
Select an CAN channel for which filtering rules need to be set.
2) Acceptance code and mask code
Each set of filter items contains an acceptance code and a mask code. The
acceptance code and mask code are both a 32-bit value. Figure 4.15 shows the specific
format.
Figure 4.15 Filter table format
REM: 1 indicates remote frame reception, data frame rejection.
EXT: 1 indicates extended frame reception, standard frame rejection.
In a standard frame, only 11 bits (bit[29:19]) are used for the frame ID; in an