Satel SATELLINE M3-TR3, Integration Manual, Page: 14 / 35

SATELLINE-M3-TR3
and –TR4
Integration Guide, Version 2.1
13
To enable the SL Commands (disables reception):

Send three “+” characters via serial port so that there is at least three bytes delay
between each character. The response is “OK”, when successfully set.
<+><at least three bytes pause><+><at least three bytes pause><+>
To disable the SL Commands (enables reception):

Send three “-” characters via serial port so that there is at least three bytes delay between
each character. The response is “OK”, when successfully set.
<-><at least three bytes pause><-><at least three bytes pause><->
Note!
The “+ + +” and “- - -” procedures are not allowed to be used, when radio is transmitting or
receiving data (i.e. the application data occupies the TD or RD lines of the radio).