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AVEVA™ Plant SCADA

Variable Naming Standards

  • Last UpdatedJul 18, 2023
  • 1 minute read

The following naming conventions should be applied to variables:

  • Variable names should have a small case letter prefix as follows:

Type

Prefix

Used for

INT (32 bits)

i

index, loop counter

INT (32 bits) and OBJECT (32 bits)

h

handle

INT (32 bits)

b

boolean (TRUE/FALSE)

REAL (64 bits)

r

real type variables

STRING (255 bytes)

s

string type variables

  • Variable names typically consist of up to three words. Each word in a variable name should start with a capital letter, for example:

    iTrendType, rPeriod, sFileName

  • Module variable names should be prefixed with an "m", for example:

    miTrendType, mrPeriod, msFileName

  • Global variable names should be prefixed with a "g", for example:

    giTrendType, grPeriod, gsFileName

  • Local variable names should not be prefixed (when you declare a variable without specifying the scope, it is considered a Local variable by default):

    iTrendType, rPeriod, sFileName

See Also

Using Cicode Programming Standards

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