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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: Data Instance – The CLM100 sets this field to identify a particular measurement from
the data format specified in Field 5. Every measurement from a given data format
type on the network should have a distinct instance value, so that monitoring devices
and displays can identify which measurement is which.
5: Data Format – This indicates the data format of the parameter value that appears in
field 6. This number refers to the "DF" (data format) value as defined by the NMEA
2000 specification.
6: Data Value – This field contains the parameter value being transmitted. Its size is
defined by the data format specified in field 5.
Revision 1.0
Appendix A – NMEA 2000
®
Interfacing
Page A3
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