UM001
69
Serial Count
The SerialCount field provides a means of appending a time or counter to the end of all asynchronous
communication messages transmitted on the serial interface. The values for each of these counters come
directly from the Synchronization Status Register in the System subsystem.
With the SerialCount field set to OFF a typical serial asynchronous message would appear as the following:
$VNYPR,+010.071,+000.278,-002.026*60
With the SerialCount field set to one of the non-zero values the same asynchronous message would
appear instead as:
$VNYPR,+010.071,+000.278,-002.026,T1162704*2F
When the SerialCount field is enabled the counter will always be appended to the end of the message just
prior to the checksum. The counter will be preceded by the T character to distinguish it from the status
field.
SerialCount Field
Mode
Value Description
NONE
0
OFF
SYNCIN_COUNT
1
SyncIn Counter
SYNCIN_TIME
2
SyncIn Time
SYNCOUT_COUNT 3
SyncOut Counter
GPS_PPS
4
Gps Pps Time
SerialStatus
The SerialStatus field provides a means of tracking real-time status information pertaining to the overall
state of the sensor measurements and onboard filtering algorithm. As with the SerialCount, a typical serial
asynchronous message would appear as the following:
$VNYPR,+010.071,+000.278,-002.026*60
With the SerialStatus field set to one of the non-zero values, the same asynchronous message would
appear instead as:
$VNYPR,+010.071,+000.278,-002.026,S0000*1F
When the SerialStatus field is enabled the status will always be appended to the end of the message just
prior to the checksum. If both the SerialCount and SerialStatus are enabled then the SerialStatus will be
displayed first. The counter will be preceded by the S character to distinguish it from the counter field.
The status consists of 4 hexadecimal characters.
SerialStatus
Value Description
0
OFF
1
VPE Status
2
INS Status
