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B TRIMBLE ASCII INTERFACE PROTOCOL (TAIP)
208 Copernicus GPS Receiver
Communication Scheme for TAIP
Communication with the unit takes place in four different ways. Message qualifiers
are used to differentiate between these.
Query for Single Sentence
The query (Q) message qualifier is used to query the GPS receiver 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, AP, CP, ID, IP, LN, PT, PV, RM, ST, TM, and VR.
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, AP, CP,
ID, IP, LN, PT, PV, RM, ST, TM, and VR.
Note – The Copernicus GPS Receiver does not support the AP TAIP message.
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.
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, AP, CP,
ID, IP, LN, PT, PV, RM, ST, TM, and VR.
Note – The Lassen PT GPS does not support the AP TAIP message.