MoTeC
Appendices
39
Appendix E – LTC CAN Messages
Messages 1 and 2 are transmitted by all LTC units.
Messages 5 to 10 are only transmitted from an LTC unit configured as a CAN
Collect Master.
Message 1
Byte
Name
Scaling
0
Compound ID = 0
N/A
1:2
Lambda
Hi:Lo = x.xxxLa
3:4
Ipn (Normalised pump cell
current)
Hi:Lo = xxxx
μA
5
LTC Internal Temperature
xxx
°
C
6
Fault bits
Heater short to Gnd
1
Heater short to VBatt
1
Heater open circuit
Heater failed to heat
1
Sensor wire short
1
Internal fault
1
Sensor Control fault
2
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
7
Heater duty cycle
xxx%
1
LTC4.9 only
2
LTC-NTK only
Message 2
Byte
Name
Scaling
0
Compound ID = 1
N/A
1
Sensor State
START
DIAGNOSTICS
1
PRE CAL
1
CALIBRATION
POST CAL
1
PAUSED
HEATING
RUNNING
COOLING
1
PUMP START
2
PUMP OFF
2
0
1
2
3
4
5
6
7
8
9
10
2:3
Battery Voltage
Hi:Lo = x.xxV
Summary of Contents for LTC
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