EXIT Statement

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5. EXIT Statement

Introduction

The IEC 61131-3 ST EXIT statement stops a loop before it has completed:

• A FOR Loop is stopped before the loop variable reaches its target value.
• A WHILE Loop is stopped before the condition becomes false.
• A REPEAT Loop is stopped before the condition becomes true.

Examples

1. Use an EXIT statement to stop a FOR loop before it completes:

   For Index:= 0 To 10 Do
       If Item[ Index ] != 0 Then
           Exit;
       End_If;
   End_For;

Standards Compliance

IEC 61131-3 Second Edition: Table 56.9.

IEC 61131-3 Third Edition: Table 72.10.

Further Information

Structured Text

For other Structured Text (ST) statement types.

Glossary

For the meaning of terms used in Fernhill SCADA.

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