ZLG CANFDNET-400U, Руководство пользователя

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CANFDNET-400U
High-performance Four-channel CANFD Bus-to-Ethernet Converter User Manual
©2021 Guangzhou ZLG Microelectronics Technology Corp.,Ltd.
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User Manual
Address 2 0x12 0x56
Address 3 0x34
Data field
0x00
Address 4 0x56 0x01
Data 5 0x02 0x02
Data 6 0x03 0x03
Address 7 0x04 0x04
Address 8 0x05 0x05
Address 9 0x06 0x06
Address 10 0x07 0x07
As shown in Table 4.16, in this mode, it is obvious that the frame information of CAN
messages will not be converted into serial frames. Since the start address in the
configured serial frame is 2, the length is 3 (in the case of extended frames). Therefore,
during conversion, the frame ID2, frame ID1, and frame ID0 in the CAN message are
sequentially converted to the serial frame as the contents of address 2, address 3, and
address 4. The data field of the CAN message will be sequentially converted to the
unfilled part of the serial frame without any modification.
4. Converting CANFD messages to serial frames
Assume that the start address of the configured CANFD identifier in the serial frame
is 2, the length is 3 (in the case of extended frame), the frame ID of the CANFD message
is 0x00123456, and the data is 0x00-0x3F. Table 4.17 lists the CANFD messages and the
results of conversion into serial frames.
Table 4.17 Converting CANFD extended frame messages into serial frames (transparent conversion with
flags)
CANFD message (extended
frame)
Frame
information
0xBF
Serial frame
Frame ID
0x00
Address 0 0x00 0x12
Address 1 0x01 0x34
Address 2 0x12 0x56
Address 3 0x34
Data field
0x00
Address 4 0x56 0x01
Data 5 0x02 0x02
Data 6 0x03 0x03
Address… … …
Address 64 0x3D 0x3D
Address 65 0x3E 0x3E
Address 66 0x3F 0x3F
As shown in Table 4.17, in this mode, it is obvious that the frame information of
CANFD messages will not be converted into serial frames. Since the start address in the