Campbell RF451, Instruction Manual

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Appendix B. Installation Scenarios
B-8
B.5 Example 5: Call-back
Call-back is the ability of a remote site to initiate a call to
LoggerNet
and have
LoggerNet call back to collect data. Call-back is supported in networks
consisting of RF451s as the single communication device as in Examples 1, 2,
and 3. Example configurations where call-back is supported:
LN-RF451 Master ~~~~~RF451 Slave-DL
LN-RF451 Master ~~~~~~RF451 Slave/Repeater-DL~~~~~~RF451 Slave-DL
LN-RF451 Master ~~~~~~~~RF451 Repeater ~~~~~~~~RF451 Slave-DL
LN-Phone Modem -----COM220-DL-RF451 Master ~~~~~~RF451 Slave-DL
NOTE: LN= LoggerNet ; DL=Datalogger
In a mixed-communication devices network, for example, phone to RF451, the
base site makes the transition between communication types. Call-back is NOT
supported when the base RF451s Active Interface is configured as CS I/O
ME Master . The RF451 Active Interface is configured as CS I/O ME
Master when the CS I/O port is used for direct connection to an ME device
(COM200, COM210, COM220, MD485, etc). The connection is done by using
an A100. Example configurations where call-back is NOT supported:
LN-Phone Modem -----COM220-CSI null modem-RF451 Master~~~~~RF451
Slave-DL(1)
LN--Ethernet--RavenXT-rs232nullmodem-RF451 Master~~RF451 Slave-DL
NOTE: LN= LoggerNet ; DL=Datalogger
In this example, the RF451s are set up as described in Example 1. In the
following program the datalogger will send a variable named Callback to
LoggerNet (PakBus address 4094) when the CallbackFlag variable is
true
.
After LoggerNet receives the variable Callback it will begin collecting data
from the datalogger and store it into a file based on the data collection settings
in the LoggerNet Setup screen. Note that the PakBus Port in the LoggerNet
Setup screen must have PakBus Port Always Open s elected.
'CR1000 Series Datalogger
'Declare Public Variables
Public counter, Result
Public CallbackFlag As Boolean
Dim scratch 'this variable is a place-holder it is not used
'Define Data Tables
DataTable (Test,true,-1)
DataInterval (0,15,Sec,10)
Sample (1,counter,FP2)
EndTable
'Main Program
BeginProg
'Configure the CR1000's CS I/O port to match the SDC address and baud rate
'set in the RF451
SerialOpen (ComSDC7,-115200,0,0,10000)
Scan (1,Sec,0,0)