Campbell RF451, Instruction Manual, Page: 19 / 62

RF451 Spread Spectrum Radio
9
is a type of “null modem” that crosses TX & RX, and ME & RING;
this line swapping is done by using an A100. The baud rates of both
the COM2xx (or other device) and the RF451 must be the same.
•
USB : The USB port is used.
7.2.2 SDC Address
Specifies the SDC address that will be used on the RF451 CS I/O port when
CS I/O SDC
is selected as the
Active Interface
.
7.2.3 Baud Rate
Specifies the baud rate that will be used on the RS-232 port.
7.2.4 Radio Operation Mode
The Radio Operation Mode option designates the method FreeWave
transceivers use to communicate with each other. FreeWave transceivers
operate in a master-to-slave configuration. Before the transceivers can operate
together, they must be set up to properly communicate.
In a point-to-point configuration, master or slave mode may be used on either
end of the communication link without performance degradation. When setting
up the transceiver, remember that a number of parameters are controlled by the
settings in the master. Also, radio network diagnostics can only be accessed at
the master radio. Therefore, we suggest you deploy the master on the
communications end where it will be easier to access.
For a datalogger PakBus network, the multi-point radio modes should be used.
For other configurations, the Operation Mode will need to be set through the
Settings Editor
tab.
7.2.4.1 Operation Mode Description
Multi-Point Master
This mode designates the transceiver as a master in multi-point mode. This
mode allows one master transceiver to simultaneously be in communication
with numerous slaves and repeaters. A multi-point master communicates only
with other transceivers designated as multi-point slaves or multi-point
repeaters.
Multi-Point Slave
This mode designates the transceiver as a slave in multi-point mode. This mode
allows the slave to communicate with a multi-point master. The slave may
communicate with its master through one or more repeaters.
Multi-Point Repeater
This option allows the transceiver to operate as a repeater in a multi-point
network.