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User Manual - QG65N2 SAE J1939 Inclinometer (Type JB) V1.1
Example – Inclination output of a 2-axis sensor
The first 2 bytes are X inclination, and the second 2 bytes are Y inclination. The rest 4 bytes are not used.
Byte0
Byte1
Byte2
Byte3
X inclination
Y inclination
8E
h
FC
h
4B
h
08
h
FC8E
h
= -882
d
= -8.82°
084B
h
= 2123
d
= 21.23°
Table 7 – Output 2-axis 90° sensor explanation
6.5.2.
Acceleration outputs PGN 65283 (FF03h).
PGN
Name
Priority
SPN
position(bit)
SPN
Width(bit)
Resolution Offset
Data Range
65283
d
FF03
h
X axis
(Longitudinal)
3
0
16
0.001g/bit
−
H series: -1.5g to +1.5g
Std. series: -2.0g to +2.0g
Y axis
(Lateral)
16
16
0.001g/bit
−
H series: -1.5g to +1.5g
Std. series: -2.0g to +2.0g
Z axis
(Vertical)
32
16
0.001g/bit
−
H series: -1.5g to +1.5g
Std. series: -2.0g to +2.0g
Table 8 - Transmit PGN2 acceleration
Acceleration can be calculated with formula: a = J1939 output / 1000. (a = acceleration in g, factory resolution is
0.001g)
Figure 17 - Output acceleration high accuracy series
Figure 18 - Output acceleration std. accuracy series
For example:
Figure 19 - Acceleration output trace
The 6 bytes data are defined as below.
Byte0
Byte1
Byte2
Byte3
Byte4
Byte5
X acceleration
Y acceleration
Z acceleration
EA
h
FF
h
0A
h
00
h
18
h
FC
h
FFEA
h
= -22
d
= -0.022g
000A
h
= 10
d
= 0.010g
FC18
h
= -1000
d
= -1.000g
6.6.
Sensor configuration (PGN 61184)
