Jeppesen Nobeltec SSHS, Руководство пользователя

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APPENDIX B – NMEA 2000 INTERFACING
Jeppesen Marine
33
Warning:
Magnetic variation changes as your location on the earth changes. It
should be adjusted with these changes. The SSHS will not make these changes
automatically.
SSHS NMEA 2000 Non-Periodic Data Transmitted PGNs
PGN 126270 – Manufacturer’s proprietary Slave Response – Deviation Calibration
Status
This indicates the status of the deviation calibration process.
Field 1:
Nobeltec Vendor ID and Industry Code (16 bits) – this field’s value will be 0x9889
2:
Product Code (16 bits) – this field’s value will be 0x1B2, which is the NMEA 2000
product code for the SSHS.
3:
Software Code (16 bits) – this field’s value will be 0x0001, which is the identifier for
this version of the Manufacturer’s proprietary protocol
4:
Command (8 bits) – this field’s value will be 0x50, which indicates that this response
contains status for deviation calibration
5:
Status Code (8 bits) – this field will indicate the status of the calibration process with
one of the values from the following table (see
Table 5
).
Status
Code Message Name Description
01
Deviation Calibration Started This message is transmitted at the beginning of the
magnetic deviation calibration process.
02
Deviation Calibration
Completed Successfully This message is transmitted upon successful
completion of the magnetic deviation calibration process
(i.e., a new deviation table has been stored in
permanent memory).
03
Deviation Calibration Failed
to Complete The SSHS attempts to perform calibration five times
before giving up and issuing this sentence. Each time
the SSHS encounters an error (see message identifiers
04, 05, and 06) it restarts the calibration process. Upon
the 5
th
error, the SSHS exits the calibration routine and
it must be restarted before it will once again try to
perform deviation calibration.
04
Deviation Calibration Turning
Too Fast During calibration, the vessel must not turn too fast
where the SSHS is unable to reliably develop deviation
data. If the SSHS senses the vessel turning to quickly, it
will issue this message and Appendix B – NMEA 2000
Interfacing 35 restart deviation calibration as long as it
has not failed five times.