REPEAT statement in ST

Syntax
`REPEAT` `...` `UNTIL ...` `END_REPEAT;`

Meaning
Use the `REPEAT` statement to specify that a group of statements (entered after `REPEAT` up to `UNTIL`) is to be executed repeatedly (at least once) until the Boolean →expression (entered after `UNTIL`) evaluates to value `TRUE` (or an equivalent). If the expression initially evaluates to value `FALSE` (or an equivalent), then group of statements is executed exactly one time.

Example

Example
`FUNCTION_BLOCK ExampleRepeatDocumentation` `VAR` `count, sum, I : INT;` `END_VAR` `count := 1;` `sum := 0;` `REPEAT` `sum := ADD(sum, count);` `count := ADD(count, 1);` `UNTIL GT(count, 10)` `END_REPEAT; (* The variable 'sum' equals '45'. *)` `END_FUNCTION_BLOCK`

FUNCTION_BLOCK ExampleRepeatDocumentation

VAR

    count, sum, I : INT;

  END_VAR

  count := 1;

  sum := 0;

  REPEAT

    sum := ADD(sum, count);

    count := ADD(count, 1);

  UNTIL GT(count, 10)

END_REPEAT;                (* The variable 'sum' equals '45'. *)

END_FUNCTION_BLOCK

No identification of infinite loops

Infinite loops are not identified and prevented by Neuron Power Engineer. Therefore, enter code in your application to prevent infinite loops (e.g. abort conditions by using IF-statements).