Campbell Scientific CR3000 CR3000 Micrologger - Page 128
Table 13., Predefined Constants and Reserved Words
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Section 7. Installation CRBasic Example 12. Using the Const Declaration Public PTempC, PTempF Const CtoF_Mult = 1.8 Const CtoF_Offset = 32 BeginProg Scan(1,Sec,0,0) PanelTemp(PTempC,250) PTempF = PTempC * CtoF_Mult + CtoF_Offset NextScan EndProg Predefined Contants Several words are reserved for use by CRBasic. These words cannot be used as variable or table names in a program. Predefined constants include some instruction names, as well as valid alphanumeric names for instruction parameters. In general, instruction names should not be used as variable, constant, or table names in a datalogger program, even if they are not specifically listed as a predefined constant. If a predefined constant, such as "SubScan" is used as a variable in a program, an error similar to the following may be, but is not always, displayed at CRBasic pre-compile. Compile Failed! line 8: SubScan is already is use as a predefined CONST. Table Predefined Constants and Reserved Words (p. 128) lists predefined constants. Table 13. Predefined Constants and Reserved Words _50hz _60hz Auto AutoRange AutoRangec BOOL8 CAO1 CAO2 Case Com2 Com3 Com310 ComME ComRS232 ComSDC10 ComSDC7 ComSDC8 CR1000 CR5000 CR800 CR9000X DO EVENT FLOAT hr FALSE If IX2 IEEE4 IX4 LONG IX3 msec mv1000C min mv1000R mv2_5c mv1000cR mv200 mv200cR mv20 mv20c mv250 mv200R mv2500c mv25c mv2500 mv500 mv5000 mv50 mv5000C mv5000R mv5000c mv50c Autoc BOOLEAN Com1 Com4 ComSDC11 CR3000 day FOR IX1 LoggerType mv1000 mv2_5 mv200c mv25 mv250c mv5000 mv5000cR mv50c 128
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