Campbell Scientific CR3000 CR3000 Micrologger - Page 133
TrigVar, DisableVar
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Section 7. Installation 'Define Data Tables DataTable(OneMin,True,-1) DataInterval(0,1,Min,10) Average(1,Batt_Volt,FP2,False) Average(1,PTemp_C,FP2,False) Average(2,Temp_C(1),FP2,False) EndTable DataTable(Table1,True,-1) DataInterval(0,1440,Min,0) Minimum(1,Batt_Volt,FP2,False,False) EndTable 'Main Program BeginProg Scan(5,Sec,1,0) 'Default Datalogger Battery Voltage measurement Batt_Volt: Battery(Batt_Volt) 'Wiring Panel Temperature measurement PTemp_C: PanelTemp(PTemp_C,_60Hz) 'Type T (copper-constantan) Thermocouple measurements Temp_C: TCDiff(Temp_C(),2,mV20C,1,TypeT,PTemp_C,True,0,_60Hz,1,0) 'Call Data Tables and Store Data CallTable(OneMin) CallTable(Table1) NextScan EndProg DataTable() and EndTable Instructions The DataTable() instruction has three parameters: a user-specified alphanumeric name for the table (for example, OneMin), a trigger condition (for example, "True"), and the size to make the table in RAM (for example, auto allocated). • Name-The table name can be any combination of numbers, letters, and underscore up to 20 characters in length. The first character must be a letter or underscore. Note While other characters may pass the precompiler and compiler, runtime errors may occur if these naming rules are not adhered to. • TrigVar-Controls whether or not data records are written to storage. Data records are written to storage if TrigVar is true and if other conditions, such as DataInterval(), are met. Default setting is -1 (True). TrigVar may be a variable, expression, or constant. TrigVar does not control intermediate processing. Intermediate processing is controlled by the disable variable, DisableVar, which is a parameter in all output processing instructions (see section, Output Processing Instructions (p. 136) ). Read More! Section, TrigVar and DisableVar - Controlling Data Output and Output Processing (p. 227) discusses the use of TrigVar and DisableVar in special applications. 133
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