Engine Data Message Format - Garmin G3X Installation Manual

I.5

Engine Data Message Format

The Engine Data message is transmitted approximately 5 times per second.
Field Name
Escape character
Sentence ID
Sentence version
UTC hour
UTC minute
UTC second
UTC second fraction
Oil pressure
Oil temperature
RPM
Unused
Manifold pressure
Fuel flow
Unused
Fuel pressure
Fuel quantity 1
Fuel quantity 2
Calculated fuel
remaining
Volts 1
Volts 2
Amps 1
Total aircraft time
Engine time
CHT6
EGT6
CHT5
EGT5
CHT4
EGT4
CHT3
EGT3
CHT2
EGT2
CHT1
EGT1
190-01115-01
Rev. L
Table I-2 Engine Data Message Format
Offset Width
0 1
1 1
2 1
3 2 hours
5 2 minutes
7 2 seconds
9 2 10 ms
11 3 1 PSI
14 4 1 degree C
18 4 1 RPM
22 4
26 3 0.1 inHg
0.1 gallon/
29 3
hour
32 3
35 3 0.1 PSI
38 3 0.1 gallon
41 3 0.1 gallon
44 3 0.1 gallon
47 3 0.1 V
50 3 0.1 V
53 4 0.1 A
57 5 0.1 hour
62 5 0.1 hour
67 4 1 degree C
71 4 1 degree C
75 4 1 degree C
79 4 1 degree C
83 4 1 degree C
87 4 1 degree C
91 4 1 degree C
95 4 1 degree C
99 4 1 degree C
103 4 1 degree C
107 4 1 degree C
111 4 1 degree C
G3X Installation Manual - RS-232 Text Output Format
Units Notes
'='
'3'
Currently '1'
calculated from fuel
computer
Min Max
00 23
00 59
00 59
00 99
000 999
-999 +999
0000 9999
000 600
000 999
000 999
000 999
000 999
000 999
000 320
000 320
-999 +999
00000 99999
00000 99999
-999 +999
-999 +999
-999 +999
-999 +999
-999 +999
-999 +999
-999 +999
-999 +999
-999 +999
-999 +999
-999 +999
-999 +999
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