Campbell NL115 Manual download pdf (Page 15)

Section 2. TCP/IP Functionality

This section describes the main TCP/IP functionality of a datalogger with an NL115

attached. Additional functionality may be added in the future. For more information, refer

to the Information Services section of the datalogger manual and CRBasic Editor Help.

2.1 Communicating over TCP/IP

Once the datalogger, the NL115, and LoggerNet have been setup as described

in Sections 1.5.1 and 1.5.2, communications are possible over TCP/IP. This

includes program send and data collection. These are straightforward

operations and are accomplished through LoggerNet’s Connect screen. For

more information see the LoggerNet manual.

Data call-back and datalogger-to-datalogger communications are also possible

over TCP/IP, as well as the creation of simple html pages to view datalogger

variables using a web browser.

2.1.1 Data Call-back

The following program is an example of doing data call-back over TCP/IP. It

first checks to see if a port to the LoggerNet Server already exists. (The

LoggerNet Server is assumed to be at the default PakBus Address, 4094.) If

not, a socket to LoggerNet is opened using the TCPOpen instruction. The

SendVariables instruction is then used to send data.

PROGRAM

' CR1000

' IP_Callback.cr1

' LoggerNet server Pak Bus Address assumed = 4094

' 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

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Campbell NL115 Manual Page 15