User's Manual

FreeWave Technologies Spread Spectrum Transceiver User Manual

900 MHz and 2.4 GHz

V5.0S

(A) Slave/Repeater

The Slave/Repeater mode allows a transceiver in a multipoint system to

simultaneously act as a slave and a repeater. When in this mode a transceiver will

repeat any packets sent from a master as well as send them out the RS232 port.

Thus where 2 transceivers would be necessary previously (one to repeat and one

to be a slave) only one is now needed.

To operate a transceiver as a multipoint slave/repeater you must set the operation

mode to (7) Multipoint Repeater and then enable the slave/repeater option (setting

of 1).

(B) Diagnostics

This option, when enabled, provides diagnostics data over a multipoint network

simultaneously with the application data. Proper use of diagnostics requires the

following:

1. Diagnostics must be enabled on the Master (set to 1)

2. A second computer to run the diagnostics software

3. A diagnostics cable, available through FreeWave Technologies

4. Diagnostics software, also available through FreeWave Technologies

Please contact FreeWave if you are interested in using the diagnostics feature in

your network.

In a Multipoint Network where the Network ID is used (instead of the Call Book)

when a slave is initially powered it will connect with the first Repeater or Master

that it hears with the same Network ID. Likewise, a repeater in the network, when

initially powered up, will connect to the first master or repeater that it hears with the

same Network ID.

In typical applications this approach works very well, however there are scenarios

where you want to force communications to follow a specific path. For example,

you may want to ensure that two repeaters in the system are communicating in

series instead of in parallel, or it may be desirable to force slaves to communicate

to specific repeaters for load balancing purposes.

There are two components to the Subnet ID:

1. Rcv Subnet ID. This setting identifies who a repeater or slave will listen to.

2. Xmit Subnet ID. This setting identifies the sub network this device transmits

on, and in turn which devices will listen to it. The Xmit Subnet ID parameter is

relevant for Multipoint Repeaters only.

To disable the Subnet ID both Rcv Subnet ID and Xmit Subnet ID should be set to

Note: The Subnet ID settings are irrelevant for the Master.

Note: The Master always transmits on Subnet ID=0, regardless of the setting. To

force communications directly through the Master the Slave or Repeater's

Rcv SubnetID must be set to 0.