Campbell Scientific CR6 CR6 Measurement and Control System - Page 160
Argument Types, 8.3.8.3 Names in Arguments
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Section 7. Installation PanelTemp is the keyword. Two parameters follow: Dest, a destination variable name in which the temperature value is stored; and Integ, a length of time to integrate the measurement. To place the panel temperature measurement in the variable RefTemp, using a 250 µs integration time, the syntax is as shown in CRBasic example Measurement Instruction Syntax (p. 160). CRBasic Example 15. Measurement Instruction Syntax ' the use of a single measurement instruction. In this 'case, the program measures the temperature of the CR6 wiring panel. Public RefTemp 'Declare variable to receive instruction BeginProg Scan(1,Sec,3,0) PanelTemp(RefTemp, 250) 'Instruction to make measurement NextScan EndProg 7.8.3.8.2 Argument Types Most CRBasic commands or instructions, have sub-commands or parameters. Parameters are populated by the programmer with arguments. Many instructions have parameters that allow different types of arguments. Common argument types are listed below. Allowed argument types are specifically identified in the description of each instruction in CRBasic Editor Help. • Constant, or Expression that evaluates as a constant • Variable • Variable or Array • Constant, Variable, or Expression • Constant, Variable, Array, or Expression • Name • Name or list of Names • Variable, or Expression • Variable, Array, or Expression 7.8.3.8.3 Names in Arguments Table Rules for Names (p. 160) lists the maximum length and allowed characters for the names for variables, arrays, constants, etc. The CRBasic Editor pre-compiler will identify names that are too long or improperly formatted. Caution Concerning characters allowed in names, characters not listed in in the table, Rules for Names, may appear to be supported in a specific operating system. However, they may not be supported in future operating systems. 160
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