Version 3.6
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7
ADDRESSING
7.1
Addressing
Addresses can be used to route a data message to the desired destination or to separate two
parallel networks from each other. In networks with repeaters it is usually necessary to use
addresses to prevent data messages from ending up in loops formed by repeaters.
SATELLINE-3AS SLR radio modules allow the use of individual addresses either for reception or
for transmission respectively.
The radio SLR1 module contains one transmission address and the SLR2 one reception address,
which are known as the primary addresses. The primary address is used whenever data from the
serial interface is transmitted.
It is also possible to transfer the received address onto the serial interface.
The address is composed of two characters totalling 16 bits, resulting in over 65,000 different
address combinations. The address is attached to the beginning of each data packet sent by the
SLR1. When the SLR2 receives a data packet whilst using addressing mode, the radio modem
will check the first two characters of each received data packet to ensure that the packet in
question was intended for the correct radio modem.
ADD H ADD L
DATA
Address may be selected between 0000h…FFFFh (h = hexadecimal, corresponding decimal
numbers are 0-65535).
Example: address 1234h (4660 in decimal format), where 12h is ADD H and 34h is ADD L.
Example: address ABFFh (44031 in decimal format), where ABh is ADD H and FFh is ADD L.
