Maretron TMP100 User Manual page 21

Chill Temperature, Theoretical Wind Chill Temperature, Heat Index Temperature,
Freezer Temperature, Exhaust Gas Temperature, and User Defined #129-#144.
4: Actual Temperature – This field is used to indicate the temperature, whose source is
specified in fields 2 and 3, in units of 0.001°C.
5: Set Temperature – The TMP100 sets this field to a value indicating "data not
available".
PGN 130823 – Temperature, High Range (Maretron Proprietary)
The TMP100 uses this PGN to provide a regular transmission of temperature. The factory default
for periodic transmission rate is once every two seconds. The transmission of this PGN can be
disabled (see PGN 126208 – NMEA Request Group Function – Transmission Periodic Rate).
Field 1: Manufacturer Code – This field contains Maretron's NMEA 2000® manufacturer code,
which is 137.
2: Reserved – The TMP100 sets all bits in this field to a value of "1".
3: Industry Group – This field contains the Marine industry group code, which is 4.
4: SID – The sequence identifier field is used to tie related PGNs together (i.e., the data
from each PGN was taken at the same time although they are reported at slightly
different times).
5: Temperature Instance – The TMP100 sets this field to identify a particular temperature
measurement from the source specified in Field 6. Every temperature measurement
from a given source type on the network should have a distinct instance value, so that
monitoring devices and displays can identify which measurement is which.
6: Temperature Source – This field is used to indicate the type of temperature
measurement being taken. Possible values for this field include Sea Temperature,
Outside Temperature, Inside Temperature, Engine Room Temperature, Main Cabin
Temperature, Live Well Temperature, Bait Well Temperature, Refrigeration
Temperature, Heating System Temperature, Dew Point Temperature, Apparent Wind
Chill Temperature, Theoretical Wind Chill Temperature, Heat Index Temperature,
Freezer Temperature, Exhaust Gas Temperature, and User Defined #129-#144.
7: Actual Temperature – This field is used to indicate the temperature, whose source is
specified in fields 5 and 6, in units of 0.1°C.
8: Set Temperature – The TMP100 sets this field to a value indicating "data not
available".
Revision 1.2
Appendix A – NMEA 2000 Interfacing
Page A3