Garmin G3X - C.7.3 EIS Numeric Parameter Data

190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page C-10
C.7.3 EIS Numeric Parameter Data
The Numeric Parameter Data message sub-type contains a variable number fixed-width records, each of
which indicates the current numeric value of a single EIS analog/digital parameter. For multi-engine
aircraft, the message sub-ID field also identifies which engine’s data the message contains.
NOTE
If the value for a parameter is invalid, the associated numeric value field will be replaced
with underscore characters (‘_’).
Table C-9 EIS Numeric Parameter Data Message
Field Name Offset Width Units Notes
Escape character 0 1 ‘=’
Sentence ID 1 1 ‘5’
Sentence version 2 1 Currently ‘1’
Sentence sub-ID 3 1 ‘1’ = Engine 1 (ASCII 0x31)
‘2’ = Engine 2 (ASCII 0x32)
UTC hour 4 2 Hours
UTC minute 6 2 Minutes
UTC second 8 2 Seconds
UTC second fraction 10 2 10 ms
Parameter ID 12 2 ASCII hex
Parameter Value 14 11 Numeric value in scientific
notation (±X.XXXXE±XX)
…variable number of records…
Parameter ID 2 ASCII hex
Parameter Value 11 Numeric value in scientific
notation (±X.XXXXE±XX)
Checksum End-4 2 ASCII hex 8-bit sum of all previous bytes
CR/LF End-2 2 0x0D / 0x0A