Campbell-scientific A6REL-12 Relay Driver Manuel d'utilisateur télécharger pdf (Page 9)

A6REL-12 Relay Driver

5.1 CRBasic

Although the following example is a CR1000 program, other dataloggers that

use CRBasic such as the CR800 and CR3000 are programmed similarly.

'CR1000 Series Datalogger

'Declare Public Variables

Public PTemp, batt_volt, P, TC

'Define Data Tables

DataTable (Test,1,-1)

DataInterval (0,15,Sec,10)

Minimum (1,batt_volt,FP2,0,False)

Sample (1,PTemp,FP2)

Sample (1,TC,FP2)

EndTable

'Main Program

BeginProg

Scan (5,Sec,0,0)

Battery (Batt_volt)

'Measure TC reference temperature

PanelTemp (PTemp,250)

'Make temperature measurement and convert it to degrees Fahrenheit

TCDiff (TC,1,mV2_5C,1,TypeT,PTemp,True ,0,250,1.8,32)

'If temperature is greater than 99 set Port low

If TC>99 then

P=0

'If temperature is less than 96 set Port high

ElseIf TC<96 then

P=1

EndIf

PortSet (1 ,P)

'Call Output Tables

'Example:

CallTable Test

NextScan

EndProg

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Campbell-scientific A6REL-12 Relay Driver Manuel d'utilisateur Page 9