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Table 3.2.4-3 TAIP Receiver Protocol Summary
Setting Default
NMEA 0183 out/RTCM SC-104 V2.1 In Port 1: 4800 baud none-8-1
TAIP bi-directional Port 2: 4800 baud none-8-1
TSIP Data Output
The Trimble Standard Interface Protocol (TSIP) is the native language for the SV12 GPS
Receiver. TSIP is a binary language with a wide variety of commands and reports. TSIP
reports can be output automatically, or they can be output as responses to queries. The
format of the automatic reports can be easily configured. The receiver is factory
configured for single precision Latitude-Longitude-Altitude. Report formats can be
modified and position and velocity formats can be customized.
The TSIPCHAT program permits using a computer keyboard to send the Request Packets
to the GPS receiver. Responses are displayed on a DOS computer screen in ASCII
format.
TAIP Data Output
The Trimble ASCII Interface Protocol (TAIP) is a Trimble-specified digital
communications interface based on printable/readable ASCII characters over a serial data
link. TAIP interface provides the means to configure the SV12 GPS Receiver to output
various sentences in response to a query or on a scheduled basis. TAIP messages can be
scheduled for output at a user specified rate starting on a given epoch from top of the
hour. For communication robustness, the protocol optimally supports checksums of all
messages. It also provides the user with the option of tagging all messages with the
receiver’s user specified identification number (ID). This greatly enhances the functional
capability of the receiver in a network environment.
The receiver is factory configured by part number to the TAIP protocol, or it can be
configured to TAIP with the TSIPCHAT program and the TSIP command 0xBC.
NMEA 0183 (Version 3.0) Data Output
The National Marine Electronics Association (NMEA) protocol is an industry standard
data protocol which was developed for the marine industry. The SV12 GPS Receiver
adheres to the NMEA 0183 data specification as published by NMEA.
NMEA data is output in standard ASCII sentence formats. Message identifiers signify
what data is contained in each sentence. Data fields are separated by commas within the
NMEA sentence. In the SV12 GPS Receiver, NMEA is an output only protocol.
The receiver is shipped with NMEA protocol by part number from the factory. The
NMEA settings can be changed using TSIPCHAT and command 0xBC. TSIP command
0x7A changes the NMEA output sentences and output rates. The new settings are saved
to BBRAM (battery backup RAM) or they can be saved to non-volatile memory using
TSIP command 0x8E-26.
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