WIRELESS MODEM CONNECTIONS

RS- 485 RS-232 TX RX GND

RX TX

(ADD.) (DATA) RX TX GND

SERIAL I/O : 19200 or 9600 , n , 8 ,1 UP TO 30 Km. ( VARIOUS RF POWERS )

TIMING

PC 2 BYTES 2 BYTES

SEND ADD.+CONT. ADD.+CONT.

PA 300 104 BYTES 104 BYTES

SEND DATA DATA