Linx Technologies HumPRC HUM-900-PRC, Руководство по данным

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6
Joining a Transmitter
The handheld transmitter is associated with a receiver using the built-in
Join Process. This process configures a star network with the central unit
as the system Administrator. Other units are added to the network as
nodes one at a time. Typically, the handheld transmitter is added as a node
to a module that has been configured as an administrator.
The schematic for a HumPRC
TM
Series transceiver configured as a receiver
is shown in the Typical Applications section. The transceiver is set as an
Administrator by pressing and holding the PAIR button for 30 seconds.
While the button is held, the MODE_IND line is on. After 30 seconds, the
MODE_IND line repeats a double blink, indicating that the operation has
begun. When the button is released the key and address generation are
complete and the module is an Administrator. A full explanation of this
operation is in the HumPRC
TM
Series data guide.
The handheld transmitter is joined
to an Administrator by pressing and
releasing the PAIR buttons on both
units. The modules automatically
search for each other using a special
protocol. When they find each
other, the administrator sends the
node the encryption key, UMASK
and its network address. The
UDESTID is set to the address of
the administrator. The values are
encrypted using a special factory-
defined key. Once the JOIN process
is complete, the MODE_IND blinks on both units and they now operate
together.
MODE_IND Window
PAIR Button
Figure 8: PAIR Button Access