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Lassen-SK8 Embedded GPS Module C-27
Trimble ASCII Interface Protocol (TAIP)
C.23 Communication Using TAIP
Communication with the unit takes place in four different ways. Message qualifiers are
used to differentiate between these.
C.23.1 Query for Single Sentence
The query(Q) message qualifier is used to query the GPS sensor to respond immediately
with a specific message. The format is:
>QAA[;ID=BBBB][;*CC]<
where AA is the requested message identifier. Messages supported by this qualifier are
AL, AM, AP, CP, ID, IP, LN, PT, PV, RM, ST, TM, VR, and X1.
Scheduled reporting frequency interval
The scheduled reporting frequency interval(F) message qualifier is used to tell the unit
how often and when to report a specific message. The format is:
>FAABBBBCCCC[;ID=DDDD][;*FF]<
where sending this sentence tells the unit to report message specified by the two digit
identifier AA at the time interval of BBBB seconds with time epoch at CCCC seconds
from top of the hour. Specifying time interval of 0000 stops scheduled reporting of the
message. The default is 0000 time interval for all messages except PV. The output
frequency for PV at cold-start is set at once every five seconds, zero seconds from top of
the hour. Messages supported by this qualifier are AL, AM, AP, CP, ID, IP, LN, PT, PV,
RM, ST, TM, VR, and X1.
*
Note – The data specified by this qualifier is the timing of the message output and may be
different from the time tag of the data in the message.
C.23.2 The Response to Query or Scheduled Report
The response(R) qualifier carry various types of data between the unit and the user
equipment. The format is:
>RAA[{B}][;ID=CCCC][;*DD]<
where AA is the two character message identifier and {B} specifies the data string within
the message. For the format of {B}, please refer to the message definitions in the previous
section. Messages supported by the response qualifier are AL, AM, AP, CP, ID, IP, LN,
PT, PV, RM, ST, TM, VR, and X1.