Each variable declared in Control FPWIN Pro7 needs an unique identifier. A meaningful identifier helps in program maintenance and saves time finding errors.
- Do not use special characters such as !, ", $, %, brackets, etc.
- The first character may not be a digit.
- The last character may not be an underscore. An underscore may not be followed by another underscore.
- The identifier may not consist of only an address, e.g. 'R0', 'DT0', 'LD0'. The identifier may not consist of only a keyword, e.g. 'ADD', 'ARRAY', 'INT'.
To increment identical identifiers by 1, activate the option Increment the identifier when inserting a new declaration after another under .
Example
Enter the first identifier bMotor_on1
Select
to append a new lineControl FPWIN Pro7 automatically inserts the next identifier bMotor_on2
The identifier's prefix can determine the data type during declaration: e.g. bVar1 will set the data type BOOL for the declaration. Activate the option Autocomplete declaration using identifier prefixes under .
Example
Enter the identifier iMaximumValue
Press Tab
Control FPWIN Pro7 automatically inserts the data type INT according to the prefix table.