Microhard Systems P900 - Operating Mode (Mesh); Operating Mode (PP;PMP); Serial Baud Rate; Wireless Link Rate

© Microhard Systems Inc. Confidential 85
Repeater: May act simply as a ‘Repeater’ to store and forward data to/from an upstream unit to/from a downstream
unit (e.g. when there is a long distance between units), or, may act as a Repeater/Slave in which case
the above function is performed AND the unit may also exchange data as a Slave within the network.
Slave: Interfaces with remote devices and communicates with Master either directly or via Repeater(s).
Values
0 - Master
1 - Repeater
2 - Slave (Remote)
6.0 Register/Command Reference
Values
S101 (MESH) Operating Mode
2 Slave (Remote)
4 Coordinator
5 Secondary Coordinator
6 Standby Coordinator
The Operating mode defines the role in the network a unit plays. A P900
modem may be configured for any role required within a radio network. This is
convenient for reasons of familiarity with any/all units, as well as for hardware
sparing purposes.
Remote: Any unit that is not a coordinator.
Coordinator: Every Mesh network requires a primary coordinator. Coordinators are used to synchronize the
network. If additional coverage is required additional secondary coordinators can be deployed.
Secondary Coordinator: Secondary Coordinators can be deployed to extend the network and to provide LOS
for geographically challenged remotes.
Standby Coordinator: Can be used to take over the duties of the Primary Coordinator to provide redundancy.
Values (bps)
S103 Wireless Link Rate
0 172800
1 230400
2 276480
3 57600
4 115200
This register determines the rate at which RF communications will occur over a
given network. All modems within a particular network must be configured with
the same wireless link rate. Faster link rates result in greater throughput,
however, for each ’step’ increase in link rate, there is an approximately 1dB
reduction in sensitivity.
Values (bps)
S102 Serial Baud Rate
0 230400
1 115200
2 57600
3 38400
4 28800
5 19200
6 14400
7 9600
The serial baud rate is the rate at which the modem is to communicate with the
attached local asynchronous device. This value must match the PC or serial
device that is connected to data port on the P900.
When forcing a module to Command Mode the data port will temporarily
communicate at the default value. When the P900 is retuned to Data Mode, the
serial port settings are returned to those specified in S102 and S110.
8 7200
9 4800
10 3600
11 2400
12 1200
13 600
14 300
Note: Most PC’s do not
readily support serial
communications greater
than 115200bps.
S101 (PP/PMP) Operating Mode
The Operating mode defines the role in the network a unit plays. A P900
modem may be configured for any role required within a radio network.
Master: Only one per network. In PP/PMP network types (see S133) data
either originates at, is destined to, or passes through the Master.