Campbell Scientific CR6 CR6 Measurement and Control System - Page 181

Section 7. Installation 'Main Program BeginProg Scan(1,Sec,0,0) PanelTemp(PTemp,250) Counter1 = Counter1 + 1 CallTable DataTable1 NextScan 'Begin executable section of program 'Begin main scan 'Call DataTable1 'End main scan SlowSequence 'Begin slow sequence 'Declare Public Variables for Secondary Scan (can be declared at head of program) Public Batt_Volt Public Counter2 'Declare Data Table DataTable(DataTable2,1,-1) Sample(1,Batt_Volt,FP2) Sample(1,Counter2,FP2) EndTable 'DataTable2 is event driven. 'The event is the scan. Scan(5,Sec,0,0) Counter2 = Counter2 + 1 Battery(Batt_Volt) CallTable DataTable2 NextScan EndProg 'Begin 1st secondary scan 'Call DataTable2 'End slow sequence scan 'End executable section of program 7.9.2 Compiling: Conditional Inclusion of Code Segments When a CRBasic user program is sent to the CR6, an exact copy of the program is saved as a file on the CPU: drive (p. 373). A binary version of the program, the "operating program", is created by the CR6 compiler and written to Operating Memory (p. 374). This is the program version that runs the CR6. CRBasic allows definition of conditional code, preceded by a hash character (#), in the CRBasic program that is compiled into the running program depending on the conditional settings. In addition, all CRBasic dataloggers accept program files or Include() instruction files with .DLD extensions. This gets around the system filters that look at file extensions for specific loggers; it makes possible the writing of a single file of code to run on multiple CRBasic dataloggers. Note Do not confuse CRBasic files with .DLD extensions with files of .DLD type used by legacy Campbell Scientific dataloggers. As an example, pseudo code using this feature might be written as: #Const Destination = "CR6" #If Destination = "CR3000" Then #ElseIf Destination = "CR1000" Then #ElseIf Destination = "CR800" Then #Else #EndIf 181