Campbell Scientific CR6 CR6 Measurement and Control System - Page 142

Section 7. Installation BeginProg Scan(1,Sec,0,0) If Flag(1) = True Then FlagReport(1) = "High" Else FlagReport(1) = "Low" EndIf If Flag(2) = True Then FlagReport(2) = "High" Else FlagReport(2) = "Low" EndIf NextScan EndProg Variable Initialization By default, variables are set equal to zero at the time the datalogger program compiles. Variables can be initialized to non-zero values in the declaration. Examples of syntax are shown in CRBasic example Initializing Variables (p. 142). CRBasic Example 10. Initializing Variables ' how variables can be declared as specific data types. 'Variables not declared as a specific data type default to data type Float. Also 'demonstrated is the loading of values into variables that are being declared. Public aaa As Long = 1 'Declaring a single variable As Long and loading the value of 1. Public bbb(2) As String *20 = {"String_1", "String_2"} 'Declaring an array As String and 'loading strings in each element. Public ccc As Boolean = True 'Declaring a variable As Boolean and loading the value of True. 'Initialize variable ddd elements 1,1 1,2 1,3 & 2,1. 'Elements (2,2) and (2,3) default to zero. Dim ddd(2,3)= {1.1, 1.2, 1.3, 2.1} 'Initialize variable eee Dim eee = 1.5 BeginProg EndProg Local Variables Local variables are variables that are reserved for use within the subroutines (p. 289) or functions (p. 578) in which they are declared as Dim. Names can be identical to globally declared variables and to variables declared locally in other subroutines and functions. This feature allows creation of a CRBasic library of reusable functions and subroutines that will not cause variable name conflicts. If a program with Dim variables declared locally attempts to use them globally, the compile error, undeclared variable, will occur. To make locally defined variable public, which makes them displayable, in cases where making them public will lead to a name conflict with other Public 142