Datalogger-To-Datalogger Communication - Campbell NL116 Instruction Manual

PROGRAM
' CR1000
' IP_Callback.cr1
' LoggerNet server Pak Bus Address
' PC IP address assumed = 192.168.7.231
' LoggerNet IPPort "IP Port Used for Call-Back" = 6785
' LoggerNet IPPort "Call-Back Enabled" is checked
' LoggerNet CR1000 "Call-Back Enabled" is checked
' LoggerNet PakBusPort "PakBus Port Always Open" is checked
' IP Call-back using auto-discover (-1) neighbor in SendVariables
Public PanelTemperature, BatteryVoltage, Result1, dummy1
Dim Socket as LONG
DataTable (CLBK1,1,1000)
DataInterval (0,0,Sec,10)
Sample (1,PanelTemperature,FP2)
Sample (1,BatteryVoltage,FP2)
EndTable
BeginProg
Scan (5,Sec,6,0)
PanelTemp (PanelTemperature,250)
Battery (BatteryVoltage)
If not Route(4094) then Socket = TCPOpen ("192.168.7.231",6785,0)
SendVariables (Result1,Socket,-1,4094,0000,100,"Public","Callback",dummy1,1)
CallTable CLBK1
NextScan
EndProg

7.1.1.2 Datalogger-to-Datalogger Communication

Communication between dataloggers is possible over TCP/IP. In order to do
this, a socket must be opened between the two dataloggers using the
TCPOpen() instruction or using the PakBus/TCP Client setting. Note that
only one datalogger should be set up to open the connection. The socket
opened by the TCPOpen() instruction or the PakBus/TCP Client setting is
used by the instructions performing datalogger-to-datalogger communication.
The example program below gets the battery voltage from a remote datalogger
and sends its panel temperature to the remote datalogger. The remote
datalogger is at IP address 192.168.7.125 and port 6785 is used for
communication between the dataloggers. The remote datalogger must have its
battery voltage stored in a public variable, BattVolt. It must also have a public
variable declared, PTemp_Base. This will be used to store the panel
temperature of the base datalogger.
NL116 Ethernet and CompactFlash
assumed = 4094
® Module
13