Appendix A - Nmea 2000 Interfacing - Maretron CLM100 User Manual

Appendix A – NMEA 2000
CLM100 NMEA 2000
PGN 65286 –Fluid Flow Rate
The CLM100 uses this proprietary PGN to provide a regular transmission of fluid flow rates for
various types of fluids. The factory default for periodic transmission rate is twice every second.
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 CLM100 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.
5: Flow Rate Instance – The CLM100 sets this field to identify a particular fluid flow
measurement from the fluid type specified in Field 6. Every flow measurement from
a given fluid type on the network should have a distinct instance value, so that
monitoring devices and displays can identify which measurement is which.
6: Fluid Type – This field is used to indicate the type of fluid flow measurement being
taken. Possible values for this field include Fuel, Fresh Water, Waste Water, Live Well,
Oil, and Black Water.
7: Reserved bits – The CLM100 sets all bits in this field to a value of "1".
8: Fluid Flow Rate – This field is used to indicate the rate of fluid flow in units of 1x10
3
m /hour.
PGN 130313 – Humidity
The CLM100 uses this PGN to provide a regular transmission of various humidity
measurements. 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: 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).
2: Humidity Instance – The CLM100 sets this field to identify a particular humidity
measurement from the source specified in Field 3. Every humidity 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.
3: Humidity Source – This field is used to indicate the type of humidity measurement
being taken. Possible values for this field include Inside Humidity and Outside
Humidity.
4: Actual Humidity – This field is used to indicate the humidity, whose source is specified
in field 2, in units of 4x10
5: Set Humidity – The CLM100 sets this field to a value indicating "data not available".
6: Reserved bits – The CLM100 sets all bits in this field to a value of "1".
Revision 1.0
®
Periodic Data Transmitted PGNs
-3
%.
Appendix A – NMEA 2000
®
Interfacing
®
Interfacing
-4
Page A1