11-12 
 
3.1.10 Text Transmission (--TXT) 
 1     2  3  4  5   6 
$--TXT,xx,xx,xx,c—c*hh<CR><LF> 
Field #  Field Type  Definition  Note 
1 
Name 
Text transmission  VD = Log, VR = VDR 
2 
xx 
Total number of sentences   
3 
xx 
Sentence number   
4 
xx 
Text identifier   
5 
c-c 
Text message   
6 
hh 
Check sum   
Example: Text message from SD2-16. 
VRTXT,01,01,01,START BACKUP*