> For the complete documentation index, see [llms.txt](https://infosys.selmotech.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://infosys.selmotech.com/selmo-struktur-und-standard/selmo-technischer-standard-und-struktur/beschreibung-selmo-plc-code/sequence-logic/less-than-sequence_name-greater-than/struktur-less-than-sequence_name-greater-than/standard-beginning.md).

# Standard Beginning

Der Funktionsblock fbStandardBegin bestimmt die Startbedingungen für die Schrittfolge und überwacht den sicheren Status, um den automatischen oder manuellen Betrieb zu ermöglichen. Dieser Funktionsblock ist ein Hauptbestandteil jeder Sequence und befindet sich in der Selmo Basic Bibliothek. **refHwzHmi** ist die Reference(Pointer)zu der Variablenliste "[GVL\_\<HwZone\_name>\_HMI.stHmiIf](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#221721-sthmihardwarezone)" **refHwzIf** ist die Reference(Pointer)zu der Variablenliste "[GVL\_\<HwZone\_name>.stHwzIf](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#221711-sthardwarezoneinterface)" **refSeqHmi** ist die Reference(Pointer)zu der Variablenliste "[GVL\_\<Sequence\_name>\_HMI.stHmiIf](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#221783-gvl_sequence1_hmi)" (stHmiSequence) **refSeqIf** ist die Reference(Pointer)zu der Variablenliste "[GVL\_\<Sequence\_name>.stSeqIf](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#221781-gvl_sequence1)" (stSequenceInterface) **xSeqSafetyModeOn** Abfrage des Sicherheitsschlüsselschalter "[GVL\_\<HwZone\_name>\_IOs.xSafetyFunctionKeySwitch](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#22173-gvl_hwzone1_ios)" **iSeqStepcounter** aktueller Schrittzähler der Sequence "[GVL\_\<Sequence\_name>.iStepcounter](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#221781-gvl_sequence1)" **aSeqPb** [Array der Handbetrieb Push buttons](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#221786-sequence1) (HMI Buttons) wird um einen Index je aktiven HMI - Button je Zone erhöht **aLampMatrix** [Array der Bit Matrix](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#221786-sequence1) (Variablen Deklaration) wird um zwei Indizes je Zone erhöht **aStepMatrix** [Array der Bit Matrix](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#221786-sequence1) (Variablen Deklaration) wird um zwei Indizes je Zone erhöht **aTempMatrix** [Array der Bit Matrix](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#221786-sequence1) (Variablen Deklaration) wird um zwei Indizes je Zone erhöht **aEocSteps** [Array der Bit Matrix](https://selmo-technology-gmbh.gitbook.io/selmo-solution/02-selmo-standard/04-selmo-plc-code/contents#221786-sequence1) (Variablen Deklaration) wird um einen Index je Schritt erhöht

Copy

```
// ########################### STANDARD BEGINNING ###########################
   {region "Description Standard Beginning"}
   (*
   The Standard Beginning determines the step sequence start up conditions and 
   monitors the safe status of the step sequence to allow Automatic or Manual operation
   *)
   {endregion}
   fbStandardBegin(
      refHwzHmi := GVL_<HwZone_name>_HMI.stHmiIf,
      refHwzIf := GVL_<HwZone_name>.stHwzIf,
      refSeqHmi:= GVL_<Sequence_name>_HMI.stHmiIf,
      refSeqIf := GVL_<Sequence_name>.stSeqIf, 
      xSeqSafetyModeOn := GVL_<HwZone_name>_IOs.xSafetyFunctionKeySwitch,
      iSeqStepcounter := GVL_<Sequence_name>.iStepcounter,
      aSeqPb := aPb, 
      aLampMatrix := aMatrix, 
      aStepMatrix := aStep, 
      aTempMatrix := aTemp,
      aEocSteps := aEocSteps); 
```

<br>


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