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Manual R600V.DAE0 (EN)
3.4 Exemplary Decoding of a CAN message frame
Exemplary decoding the "ground & canopy" message (PGN 0xC000)
Based on a line from a CAN log (6339707, 18C0FF80, Rx, 8, 8C, AB, 27, C, 34, C, 0, 0)
Tab 11 Decoding a CAN SAE J1939 message frame
11 bit CAN ID
18 C0 FF 80
0x
[
1 1000 1100 0000 1111 1111 1000 0000]
(11+18bit = 29bit)
Tab 12 Example for decoding the CAN ID (29bit, PDU1 format)
8 bit PDU format (<240)
06
00
00
C0
0x
0x
0x
0x
[110]
[0]
[0]
[1100 0000]
2
2
2
Tab 13 Example for decoding the 8 byte data field
[1000
1100
1010
1011
Sensor
Canopy con-
status
fidence
confidence
(bit 1-2)
(bit 3-9)
[00]
[1100011]
[1010101]
2
2
0
99%
Notes: little endian format, bit 1 underlined; colours indicate correspondences
Page 22 of 29
18 bit CAN ID
2
2
PDU1 format
PGN (parameter group number)
8C AB
27 0C
0x
0010 0111 0000 1100 0011 0100 0000 1100 0000 0000 0000 0000]
Ground
Canopy distance
(bit 17-32)
(bit 10-16)
0C 27
0x
2
3'111mm
85%
0...8 byte
data field
8C AB 27
0x
0C 34 0C 00
00
8 bit PDU specific
(group extension)
FF
0x
[1111 1111]
2
Global destination address
34 0C
00 00
Ground distance
(bit 33-48)
0C 34
0x
3'124mm
R600V.DAE0_manual_1.5 (EN).docm
Last Update: 07 Jan 2021
8 bit source
address
80
0x
[1000 0000]
2
2
Reserved
(bit 49-64)
00 00
0x
N/A