Teltonika FMB1YX User Manual page 80

When activated RS485 driver chip draws constant 30mA current.
When Entering Sleep or Deep sleep, Chip will be powered off too.
FMB125 RS485 Pins connection diagram are shown on the Figure 66:
6.2 RS485 modes
In Configurator windows select RS232/RS485 window where is RS485 Settings (more
information about available RS232/RS485 parameters configuration in
RS232\RS485 parameters configuration
6.2.1 RS485 transmit (FMB log) mode
RS-485 works in transmit mode, it prints FM log.
It won't respond to commands.
6.2.2 RS485 transmit (GNSS NMEA) mode
RS-485 works in transmit mode, it prints GNSS
NMEA log. It won't respond to commands.
Figure 66 connection block diagram
chapter).
Figure 67 RS485 FMB Log Mode configuration
Figure 68 RS485 GNSS NMEA Mode configuration
5.19.10 FMB125
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