Campbell RF401A Series, Instruction Manual

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RF401A-Series Spread Spectrum Radio
25
RF401A must also be given a unique
PakBus Address
under the
PakBus tab. This will prevent communication errors with other
devices in the network and provide an address for a datalogger to
query. The datalogger uses the GetVariables() instruction in the
program to request the RSSI information, which includes the PakBus
address of the device the RF401A last received communication from.
A datalogger can request the RSSI information from any RF401A
node in the network as long as there is a known communication route.
Once the datalogger has received the RSSI information, it can be
displayed in the Public table or stored to a data table.
CRBasic Example 11-1. Retrieving RSSI Information
'Example Program
Const RFPBA = 401
Const Neigh = -1
'Set PakBus address of the RF401A Node
'Set neighbo
u
r address, -1 = Auto Discover, or 0= No neighbo
u
r
Public Result, RFstatus(2)
Alias RFstatus(1) = RSSI 'Received signal strength indicator
Alias RFstatus(2) = PBA 'Address of the last received communication
BeginProg
Scan (5,Sec,0,0)
GetVariables (Result,ComSDC7,Neigh,RFPBA,0000,0,"Public","RFSignalLevel",RFstatus(),2)
NextScan
EndProg
• PakBus Graph
(RF401A must be running OS Version
OBJ30596V05.obj
or greater) –
The RF401A series must be configured as a PakBus node using
DevConfig . Under the Main tab, set the Protocol to PakBus Node .
This setting makes the RF401A an independent device in the network.
The RF401A series must also be given a unique PakBus Address
under the
PakBus
tab. The RSSI and radio settings can be remotely
accessed for any RF401A node displayed in PakBus Graph . Right-
click on a device and a floating menu will be presented. Click on the
Edit Settings option to display a list of settings. The RSSI is located
under the
Advanced
tab in the
Received Signal Strength
field. The
RSSI and the PakBus address of the device the RF401A last received
communication from will both be displayed in the same field.
11.3.5 Retransmit Failures
Records the number of retransmit failure.
11.3.6 ME Baud Rate
Specifies the baud rate that will be used on the CSI/O port when configured for
ME Master.
11.3.7 RS-232 Parity
Specifies the parity that will be used on the RS-232 port.