RETURN Statement

Introduction

The IEC 61131-3 ST RETURN statement exits a Program Unit early.

Examples

Use a RETURN statement to return from a function early:

Function CheckValue : Bool
    Var_Input Value : Int; End_Var

    if Value = 0 Or Value = 2 Then
        CheckValue := false;
        return;
    end_if;

    CheckValue := True;
End_Function

Standards Compliance

IEC 61131-3 Second Edition: Table 56.3.

IEC 61131-3 Third Edition: Table 72.3.

Further Information

Structured Text

For other Structured Text (ST) statement types.

Glossary

For the meaning of terms used in Fernhill SCADA.