Siemens XT55 AVL Manual De Usuario

XT55 AVL User’s Guide 
Confidential/Released 

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XT55_avl_ug_V03 

Page 19 of 37 

28.06.2004 

Please note that all extended NMEA commands beginning with 

$PSRF111 are for internal 

test purposes only. Whereas all extended NMEA commands beginning with 

$PSRF112 and 

$PSRF109 are implemented for configuration of history, alarm and remote tracking function. 
Please note that all NMEA commands, which have to be sent to the XT55 module, are 
accepted when the 

End Sequence <CR><LF> is also included. The End Sequence 

<CR><LF> tells the GPS receiver that the received command is terminated and incoming 
next string is new command.  
•  The CR – Carriage Return (ASCII code 13), which positions the cursor to the left side of 

the current line of characters  

•  The LF - Line Feed (ASCII code 10), which moves the cursor down one line on the input 

commands. 

All commands listed below are available for direct connected XT55 as well as for remote 
configuration (except the $PSRF111 command). 
 
 
 

$PSRF112, 
value,  
*XX 

Parameter description: 

value:    

//commands overview 

 

 

Defined value 

 

 

0 //overview of all implemented history, alarm and remote 

*XX  

//CheckSum has to be calculated. 

Example 1  
$PSRF112,0*01