> 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/mem-zone.md).

# Mem zone

The implementation of a storage element that can be set and reset is carried out by the automatic insertion of two zones. Setting and resetting are each done with the operands "S", while querying the memory is possible with the operands "I". This can be performed for both the normal zone (query for logical 1) and the inverted zone (query for logical 0).

Copy

```
// --------------------------- ZONE 10 | Zone Mem 10 ---------------------------

      // Zone Condition Assigns
      aCondZone10[0] := TRUE;

      fbZone10.P_iIndexOfLamp := 29;
      fbZone10.P_iIndexOfPaircheckLamp := 30;
      fbZone10.P_xInputPolarity := eInputPolarity.Active_High;
      fbZone10.P_xOutputOpposite := FALSE;
      fbZone10.P_xManualRelease := GVL_Sequence1.stSeqIf.xSeqManualReleased;
      fbZone10.P_xFeedbackInput := GVL_Sequence1_IOs.o_xZoneMem10;
      fbZone10.P_xManualPB := FALSE;
      fbZone10.P_timFeedbackInput := T#0MS;
      fbZone10.P_xNoPBPressed := GVL_Sequence1.stSeqIf.xSeqNoPBpressed;
      fbZone10.P_xAutomaticRelease := GVL_Sequence1.stSeqIf.xSeqAutomaticReleased;
      fbZone10.P_iActualStepCounter := GVL_Sequence1.iStepCounter;
      
      fbZone10( // Zone Mem 10
         aZone := aZ10,
         aLampMatrix := aMatrix,
         aTempMatrix := aTemp,
         aMonMatrix := GVL_Sequence1_HMI.aHmiMon,
         aMonBuffer := GVL_Sequence1_HMI.aHmiMonBuffer,
         aStepMatrix := aStep);
      
      xOutputTempZ10 := fbZone10.M_InOutput(
         aCross := aCrossZone10,
         aCond := aCondZone10,
         aFeedbackPairCheckInput := aPaircheckZone10);

      GVL_Sequence1_IOs.o_xZoneMem10 S= xOutputTempZ10;

      // Feedback state
      xFeedbackStateZone10 := fbZone10.P_xFeedbackState;

   // --------------------------- ZONE 11 | Zone Mem 10 ---------------------------

      // Zone Condition Assigns
      aCondZone11[0] := TRUE;

      fbZone11.P_iIndexOfLamp := 31;
      fbZone11.P_iIndexOfPaircheckLamp := 32;
      fbZone11.P_xInputPolarity := eInputPolarity.Active_Low;
      fbZone11.P_xOutputOpposite := FALSE;
      fbZone11.P_xManualRelease := GVL_Sequence1.stSeqIf.xSeqManualReleased;
      fbZone11.P_xFeedbackInput := GVL_Sequence1_IOs.o_xZoneMem10;
      fbZone11.P_xManualPB := FALSE;
      fbZone11.P_timFeedbackInput := T#0MS;
      fbZone11.P_xNoPBPressed := GVL_Sequence1.stSeqIf.xSeqNoPBpressed;
      fbZone11.P_xAutomaticRelease := GVL_Sequence1.stSeqIf.xSeqAutomaticReleased;
      fbZone11.P_iActualStepCounter := GVL_Sequence1.iStepCounter;
      
      fbZone11( // Zone Mem 10
         aZone := aZ11,
         aLampMatrix := aMatrix,
         aTempMatrix := aTemp,
         aMonMatrix := GVL_Sequence1_HMI.aHmiMon,
         aMonBuffer := GVL_Sequence1_HMI.aHmiMonBuffer,
         aStepMatrix := aStep);

      xOutputTempZ11 := fbZone11.M_InOutput(
         aCross := aCrossZone11,
         aCond := aCondZone11,
         aFeedbackPairCheckInput := aPaircheckZone11);

      GVL_Sequence1_IOs.o_xZoneMem10 R= xOutputTempZ11 OR (GVL_Sequence1_HMI.stHmiIf.xHmiPbReset AND NOT GVL_Sequence1.stSeqIf.xSeqAutomaticReleased);

      // Feedback state
      xFeedbackStateZone11 := fbZone11.P_xFeedbackState;
```


---

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