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O.S. engine EC-11 - Page 22

O.S. engine EC-11
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《communication specification
CAN
Pin assignment (ECU side connector)
1
2
3
4
connector : JST SMR-04V-BC
data format
Data frame
・DATA
The internal data of the ECU can be collected by other external devices through its CAN
communication function. The communication protocal would show as followings.
red
+5V power supply output
Signal(High)
Signal(Low)
GND
white
green
black
communication protocol
Recessive(1)
SOF ID100bit (11bits) RTR IDE RB0 DLC3 DLC2 DLC1 DLC0
Dominant(0)
ID
0
0
0
DATA LENGTH
Control Field
DATA07(MSB) MAX 8byte CRC14~0bit (15bits)
CRC
DEL
ACK
ACK
DEL
EOF IFS
DATA Field
CRC Field
NAME ID
DATA
LENGTH
DATA 0
7
DATA RANGE
0
5
6
7
769
0x0301
8
0x000000000000
DATA
Negative pressure
hPa
770
0x0302
Pressure (hPa
768
0x0300
8
0x000000000000
DATA
8
0x000000000000
DATA
Negative pressure peak
hPa
771
0x0303
8
0x000000000000
DATA
8
0x000000000000
DATA
Head temperature
(℃)
775
0x0307
8
0x000000000000
DATA
12V voltage
mV
774
0x0306
Throttle signal input
(%)
777
0x0309
8
0x000000000000
DATA
Intake port temperature
(℃)
776
0x0308
8
0x000000000000
DATA
Trim signal Width
μs
779
0x030B
8
0x000000000000
DATA
Throttle signal output
(%)
778
0x030A
8
0x000000000000
DATA
21
Rotation speed
rpm
780
0x030C
8
0x000000000000
DATA
5V voltage
mV
773
0x0305
8
0x000000000000
DATA
3.3V voltage
mV
772
0x0304
8
0x000000000000
DATA
0x8000 (-32768)
0x7FFF (32767)
Fuel pressure
kPa
1
4