Version
3.3
21
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.
The SATELLINE-M3-R1 and -M3-T1 radio modules allow the use of individual addresses either
for reception or for transmission respectively.
The SATELLINE-M3-T1 radio modem module contains one transmission address and
SATELLINE-M3-R1 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
SATELLINE-M3-T1. When a SATELLINE-M3-R1 receives a data packet whilst using addressing
mode, the receiver will check the first two characters of each received data packet to ensure that
the packet in question was intended for the correct SATELLINE-M3-R1.
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.
