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SSC200 User’s Manual
Page A4 Appendix A – NMEA 0183 Interfacing Revision 1.8
$PMAREXE,SSC200,,5D,2,,,<CR><LF>
This command causes the SSC200 to use variation data from the NMEA 0183 interface and ignore all
other variation sources (i.e., NMEA 2000
®
interface and manual entries).
$PMAREXE,SSC200,,5D,3,,,<CR><LF>
This command causes the SSC200 to be set back to the factory default where variation data is used
from either the NMEA 0183 interface or the NMEA 2000
®
interface.
$PMAREXE,SSC200,,5E,2,”damping period”,,<CR><LF>
This command causes the SSC200 to use a rate of turn damping rate corresponding to the value
programmed in “damping period”. The damping period is programmable from 100 to 60000, which
represents 100ms to 60 seconds.
$PMAREXE,SSC200,,5E,11,,,<CR><LF>
This command causes the SSC200 to zero the rate of turn indication and record the compensation
value used, along with the current operating temperature of the compass. The boat must remain at rest
for a period of one minute after this command is issued.
$PMAREXE,SSC200,,5E,12,,,<CR><LF>
This command causes the SSC200 to cancel any rate of turn zeroing operations currently in progress.
$PMAREXE,SSC200,,50,,,,<CR><LF>
Will cause the SSC200 to retransmit the last deviation calibration status message
PMARSETPX – Maretron Proprietary Set Period Sentence
The SSC200 can be programmed to enable or disable the periodic transmission of the HDG, HDM,
HDT, ROT, and PMAROUT sentences. In addition, the periodic transmission rate for these sentences
and the Variation Lifetime (see RMC and VTG) can be programmed using this sentence.
$PMARSETPX,SSC200,,A,B*hh<CR><LF>
Field A: Identifier code, identifies the sentence or parameter to be programmed (see following table)
B: Integer where “0” disables sentence and positive numbers are multipliers of 1ms (i.e.,
programmed integer of 200 would mean a 200ms transmission interval)
Identifier Code Sentence Default Rate
00 HDG 100 (100ms)
01 HDM 0 or Disabled
02 HDT 0 or Disabled
03 ROT 200 or 200ms
04 PMAROUT 1000 or 1sec
0A Variation Lifetime 5000 or 5sec
Some example sentences are shown below:
1. To disable transmission of the HDG sentence:
$PMARSETPX,SSC200,,00,0
2. To enable transmission of the HDG sentence at intervals of 100 ms:
$PMARSETPX,SSC200,,00,100
3. To disable transmission of the HDM sentence:
$PMARSETPX,SSC200,,01,0
4. To enable transmission of the HDM sentence at intervals of 1000 ms:
$PMARSETPX,SSC200,,01,1000