> 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-solution/selmo-solution-en/selmo-structure-and-standard/selmo-technical-standard-and-structure/description-selmo-plc-code/sequence-logic/less-than-sequence_name-greater-than/structure-less-than-sequence_name-greater-than/sequence-logic-control/zone-call/zone-methods-call/input-zone.md).

# Input zone

The zone input enables the processing of incoming information, for example from sensors. If a sequence-check is set for a zone input in a step, a state change of this zone input is expected in that step. An interlock check of an input zone ensures that the expected state of this zone input is maintained in that step. In practice, for example, a switch can be monitored by a zone input. In the event of a switching operation, the switch signal must be linked to the zone input and a sequence-check must be set in the corresponding step.

Copy

```
   // --------------------------- ZONE 7 | Zone 7 ---------------------------

      // Zone Cross Interlock Assigns
      aCrossZone7[0] := GVL_<Sequence_name>_HMI.xManBtn_Zone_11;
      aCrossZone7[1] := GVL_<Sequence_name>_HMI.xManBtn_Zone_12;

      // Zone Condition Assigns
      aCondZone7[0] := TRUE;
      aPaircheckZone7[0] := FALSE;

      fbZone7.P_iIndexOfLamp := 23;
      fbZone7.P_iIndexOfPaircheckLamp := 24;
      fbZone7.P_xInputPolarity := eInputPolarity.Active_High;
      
      fbZone7( // Zone 7
         xNoPBPressed := GVL_<Sequence_name>.stSeqIf.xSeqNoPBpressed, 
         xAutomaticRelease := GVL_<Sequence_name>.stSeqIf.xSeqAutomaticReleased, 
         iActualStepCounter := GVL_<Sequence_name>.iStepCounter, 
         aZone := aZ7, 
         aLampMatrix := aMatrix, 
         aTempMatrix := aTemp,
         aMonMatrix := GVL_<Sequence_name>_HMI.aHmiMon,
         aMonBuffer := GVL_<Sequence_name>_HMI.aHmiMonBuffer, 
         aStepMatrix := aStep);
      
      fbZone7.M_Input(
         xFeedbackInput := GVL_<Sequence_name>_IOs.i_xZone7, 
         timFeedbackInput := T#0MS,  
         xManualRelease := GVL_<Sequence_name>.stSeqIf.xSeqManualReleased, 
         aCross := aCrossZone7, 
         aFeedbackPairCheckInput := aPaircheckZone7); 

   // --------------------------- ZONE 8 | Zone 7 Inv ---------------------------

      // Zone Cross Interlock Assigns
      aCrossZone8[0] := GVL_<Sequence_name>_HMI.xManBtn_Zone_9;
      aCrossZone8[1] := GVL_<Sequence_name>_HMI.xManBtn_Zone_10;

      // Zone Condition Assigns
      aCondZone8[0] := TRUE;
      aPaircheckZone8[0] := FALSE;

      fbZone8.P_iIndexOfLamp := 25;
      fbZone8.P_iIndexOfPaircheckLamp := 26;
      fbZone8.P_xInputPolarity := eInputPolarity.Active_Low;
      
      fbZone8( // Zone 7 Inv
         xNoPBPressed := GVL_<Sequence_name>.stSeqIf.xSeqNoPBpressed, 
         xAutomaticRelease := GVL_<Sequence_name>.stSeqIf.xSeqAutomaticReleased, 
         iActualStepCounter := GVL_<Sequence_name>.iStepCounter, 
         aZone := aZ8, 
         aLampMatrix := aMatrix, 
         aTempMatrix := aTemp,
         aMonMatrix := GVL_<Sequence_name>_HMI.aHmiMon,
         aMonBuffer := GVL_<Sequence_name>_HMI.aHmiMonBuffer, 
         aStepMatrix := aStep);
      
      fbZone8.M_Input(
         xFeedbackInput := GVL_<Sequence_name>_IOs.i_xZone7, 
         timFeedbackInput := T#0MS,  
         xManualRelease := GVL_<Sequence_name>.stSeqIf.xSeqManualReleased, 
         aCross := aCrossZone8, 
         aFeedbackPairCheckInput := aPaircheckZone8); 
```

<br>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://infosys.selmotech.com/selmo-solution/selmo-solution-en/selmo-structure-and-standard/selmo-technical-standard-and-structure/description-selmo-plc-code/sequence-logic/less-than-sequence_name-greater-than/structure-less-than-sequence_name-greater-than/sequence-logic-control/zone-call/zone-methods-call/input-zone.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.