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Simple data protocol: (ascii code) – NEXCOM NViS 3620 User Manual

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Appendix F: OBDII Module Setup and Command

NViS3620/3720 series User Manual

Simple Data Protocol: (ASCII CODE)

Data

Description

HEAD

@

Byte 0

,

Byte 1

Speed , (0~255) KM/HR

Byte 2

,

Byte 3

RPM High Byte (RPMHB)

Byte 4

,

Byte 5

RPM Low Byte(RPMLB) , RPM=RPMHB*256+RPMLB

Byte 6

,

Byte 7

Engine Loading, (0~100%)

Byte 8

,

Byte 9

Battery Voltage (BV), = (BV+100)/10 (v)

Byte 10 ,
Byte 11 Engine Temperature( ET), =ET-40°C
Byte 12 ,
Byte 13 Throttle position 0~100 %
Byte 14 ,
Byte 15 Status , Note 2
Byte 16 ,
Byte 17 MAF (0~255), MAF RATE= MAF * 3;
Byte 18 ,
Byte 19 Distance : D1
Byte 20 ,
Byte 21 Distance: D2
Byte 22 ,

Byte 23 FU, Average Fuel Economy (km/L) =Fu /10
Byte 24 ,

Byte 25

Check sum (odd numbers)= Byte1+ Byte3+Byte5+
Byte7+Byte9+Byte11+ Byte13+ Byte15+Byte17+
Byte19+Byte21+Byte23

Byte 26 Carry return ( 0x0D )
Byte 27 Line feed ( 0x0A)

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