ZAURA Datasheet, PDF (14/99 Pages) –

ZAURA RF Wireless Library
Programmer’s Reference Manual
2
for communications. The Network ID is user-configurable value 1-4 bytes
long that logically subdivides a channel into separate groups or cells.
ZAURA RF Modules using the same channel but different Network ID's
will not be able to communicate with each other.
The ZAURA RF Wireless Network provides both unreliable and reliable
data transfer services, depending on the value of the Frame Format con-
figuration parameter. There are three different frame formats. The first, a
DA format, is an unreliable data transfer service with CRC checking and
up to 58 bytes of application data sent per frame. The second frame for-
mat, DA_SA, is the same as the DA frame format except that it adds the
source address to the headers. The third frame format, DA_SA_CTRL,
provides a reliable data transfer service. Of the three frame formats, the
DA_SA_CTRL format incurs the most overhead and is designed for
instances in which reliable data transfer is more important than through-
put.
Node Addresses
Each node within the ZAURA RF Wireless Network should have a
unique 8-bit address that allows all other nodes to identify that node. This
is a mandatory requirement if the ZAURA RF Wireless Network is con-
figured to use a frame format that includes the source address field. How-
ever, if all nodes are configured to use frames that only carry a destination
address and all transmissions are broadcast, then there is no requirement
for unique node addresses.
A node can be assigned an address in the range 0x01 to 0xFE (i.e., 254
unique node addresses). Node address 0xFF is used as the broadcast
address; i.e., when a frame is transmitted to the 0xFF address, it will be
received by all nodes within radio range of the transmitter. Node address
0x00 is reserved; it must not be used as a node address and should not be
transmitted in either the destination or source address fields of a packet.
The ZAURA RF Wireless Library
RM006003-1011