Trimble Inc. TRIMTRAC1 Benutzerhandbuch

 

DRAFT TrimTrac Locator Technical Manual      32 

Unit Identification (ID) must be used in all communications with the TrimTrac 
locator. The TrimTrac locator may be assigned a numeric ID of eight digits only 
while the TrimTrac locator is connected to a provisioning module (available 
separately).  The default ID is set to 00000000.  

The TrimTrac locator checks all incoming messages for a Unit ID and all 
incoming message must include a Unit ID. If the Unit ID included in a message 
sent to TrimTrac locator does not match the Unit ID configured in the TrimTrac 
Device, then the message is ignored. 

The checksum field provides for a two-digit hexadecimal checksum value, which 
is computed by XOR’ing all characters from the beginning of the message up to 
and including the * character.  The checksum is always the last element of the 
message before the end-of-message delimiter.  

The following over-the-air TrimTrac Application Protocol Messages are used to 
communicate with and control the TrimTrac locator. 

 

REPORT_POS 

Basic Position message 

STATUS_MSG 

Same as REPORT_POS except no location/velocity 
data 

SET_APP_CONFIG 

Changes Application parameters 

RESP_APP_CONFIG 

Reports current Application parameters 

SET_PROV_CONFIG 

Changes Communication parameters 

RESP_PROV_CONFIG 

Reports current Communication parameters 

SET_GPS_CONFIG 

Changes GPS parameters 

RESP_GPS_CONFIG 

Reports current GPS parameters 

QUERY_CONFIG 

Reports current Application, Communication or GPS 
parameters as requested 

The TrimTrac Application Protocol messages are described in the following 
sections beginning on the next page.