Microhard Systems MHX-2400, Operating Manual

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MHX-2400 Operating Manual: Chapter 3 Configuration Options
17
Select a Network Address
and assign it to all units
which will be included in the
network.
Use the same Unit Address
on both units for point-to-
point mode. In multipoint
mode, set each Slave and
Repeater to a different Unit
Address.
Valid Unit Addresses are 1
to 65535.
S Register 104 - Network Address
The Network Address defines the membership to which individual units can
be a part of. By establishing a network under a common Network Address,
the network can be isolated from any other concurrently operating network.
As well, the Network Address provides a measure of privacy and security.
Only those units which are members of the network will participate in the
communications interchange. Valid values for the Network Address range
from 0 to 65535, inclusive.
To enhance privacy and reliability of communications where multiple
networks may operate concurrently in close proximity, it is suggested that an
atypical value be chosen – perhaps something meaningful yet not easily
selected by chance or coincidence.
Default is 1.
S Register 105 - Unit Address
In point-to-point operation, the Unit Address on both the Master and Slave
(or Repeater) units must be the same. In a multipoint system, the Unit
Address uniquely identifies each Slave and Repeater from one another.
Each unit in a multipoint system must have a unique Unit Address ranging
from 1 to 65535. Do not use 0 as a Unit Address, and do not use a Unit
Address more than once within the same Network. This is required because
the Master must be able to acknowledge each unit individually, based on the
Unit Address.
S Register 106 - Primary Hopping Pattern
S Register 206 - Secondary Hopping Pattern
Since the MHX-2400 is a frequency-hopping modem, the carrier frequency
changes periodically according to one of 49 pseudo-random patterns,
defined by the Primary and Secondary Hopping Patterns. Valid entries for
each are 0 through 50.
The concept of Primary and Secondary Hopping Patterns was introduced in
the discussion of S Register 101 (Operating Mode).
Using the designations M[a,] Rx[a,b] and Sx[a] where:
- M
indicates Master;
-
R
indicates Repeater;
-
S
indicates Slave;
-
x
is the Unit Address;
-
a
is the primary hopping pattern; and,
-
b
is the secondary hopping pattern;