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Print Function

The print function allows the user to trace and better understand the code function and result of operations. For an educational tool, access to a print function is a first class need. As this is not described by the IEC 61131-3 standard, we have chosen to implement in our own manner.

note
  • The print function provides a direct output for any expression that returns one of the supported without needing a TO_STRING type of conversion.
  • The print function takes only one argument.
Print Fun
print(3 * 4);           // Print expressions directly without type conversion

a : INT := -5;
print(a);               // A 'name expression' returns the variable value

// Concatenation is required to print multiple items on the same line
print(CONCAT_STRING('The value of a is : ', TO_STRING(a)));

The printf function allows the use to print the value of numeric data types in another format.

The application supports the Microsoft .Net format strings as the second function input.

Print formatted
printf(2, 'b3');          // prints 010

printf(10, 'X');          // prints A

printf(1.234, 'f2');      // prints 1.23