diff --git a/include/interfaces.h b/include/interfaces.h
index 81afbdd..cd2026b 100755
--- a/include/interfaces.h
+++ b/include/interfaces.h
@@ -170,6 +170,7 @@ struct T_vaultRecord
 
 };
 
+// ATTENTION: struct length must be 64 exactly!!!
 struct T_moduleCondition
 {
         // store conditon of all system components, hold in RAM
@@ -182,44 +183,53 @@ struct T_moduleCondition
         uint8_t	ram;
         uint8_t	intEe;
         uint8_t	extEe;
-
         uint8_t	rtc;				// 1: time/date OK   100: time not plausible  200: hardware error
         uint8_t	boardHw;
         uint8_t	printer;
         uint8_t	modem;
-
         uint8_t	signal;				//		1...99
         uint8_t	regist;				// 100:not  1:reg  2:ping OK   3:gotTime
         uint8_t	mdbBus;
+        // 10
         uint8_t	coinChecker;		// EMP, OMP or mei-cashflow
-
         uint8_t	coinEscrow;
         uint8_t	mifareReader;       // 0: unknown  1=OK  200=no response  201=wrong response   202: Reader reports HW-error
         uint8_t	creditTerm;
         uint8_t	coinReject;
-
         uint8_t	coinSafe;
         uint8_t   billSafe;
         uint8_t	voltage;			// 1:11..14V
         uint8_t   temper;
-
         uint8_t	poweronTest;
+        // 20
         uint8_t   doorState;			// 1: alles zu  200: tuer offen + bit1(S) +bit2(CB) + bit3(CB)
         uint8_t	doorWasOpened;		// 1: all doors are closed   200: any door was just opened
         uint8_t	changer;			// can only be tested by usage
-
         uint8_t   coinBlocker;		// can only be tested by usage
         uint8_t   billReader;			// can only be tested by usage
         uint8_t   ResetReason;
         uint8_t	allModulesChecked;
-
         uint8_t   alarmState;
         uint8_t   res11;
         uint8_t   res12;
+        // 30
         uint8_t   res13;
-// 31
+        uint8_t     padd01;
+        uint8_t     padd02;
+        uint8_t     padd03;
+        uint32_t   padd04;
+        uint32_t   padd05;
+        uint32_t   padd06;
+        uint32_t   padd07;
+        // 50
+        uint32_t   padd08;
+        uint32_t   padd09;
+        uint32_t   padd10;
+        uint16_t   padd11;
+        // 64
 };
 
+// ATTENTION: struct length must be 64 exactly!!!
 struct T_dynamicCondition
 {
         char allDoorsDebounced;
@@ -228,10 +238,11 @@ struct T_dynamicCondition
         char upperDoor;         // 99: undefined  0:closed  1:open
         char middleDoor;		// 99: undefined  0:closed  1:open
         char lowerDoor;         // 99: undefined  0:closed  1:open
-        char reserve;
+        char coinAttached;
         char billBox;
         char modeAbrech;
         char onAlarm;           // 0:alarm aus  1:alarm  2:alarm mit Sirene   3: Sirenentest
+        // 10
         char nowCardTest;
         char nowPayment;        // not used, always 0
         char lastMifCardType;
@@ -266,6 +277,7 @@ struct T_dynamicCondition
 
         char        res1;
         uint16_t    U_Batt;
+        // 20
         uint16_t	Temperatur;
         uint16_t	nrCoinsInBox;
         uint32_t	amountInBox;
@@ -275,10 +287,10 @@ struct T_dynamicCondition
         char        jsonValid_device;
         char        jsonValid_cash;
         char        jsonValid_print;
+        // 40
         char        jsonValid_serial;
         char        jsonValid_time;
         char        lastFileType;
-// 44
         uint8_t     MifCardHolder[8];
         uint8_t     resultOfLastTemplPrint;
                     // 0: unknown or printing in progress
@@ -292,7 +304,15 @@ struct T_dynamicCondition
                     //			bit5: printer not ready
         uint8_t     startupTestIsRunning;
 
-        //54
+        uint8_t     padd01;
+        uint8_t     padd02;
+        uint8_t     padd03;
+        //50
+        uint32_t   padd04;
+        uint32_t   padd05;
+        uint32_t   padd06;
+        uint16_t   padd07;
+        // 64
 };
 
 struct T_extTime
@@ -329,6 +349,7 @@ struct T_extTime
 typedef uint8_t UCHAR;
 typedef uint16_t UINT;
 
+// ATTENTION: struct length must be 64 exactly!!!
 struct T_devices
 {
     // set by master, used(1) or notused (0) or type 2....20
@@ -337,27 +358,33 @@ struct T_devices
     UCHAR	kindOfCoinChecker;		// 0: without  1=EMP820   2=EMP900    3=currenza Csquare  (MW)
     UCHAR	kindOfMifareReader;		// by now only stronglink SL025 =1
     UCHAR   solarPower;             // 1:sleep allowed   0: no sleep
-    //UCHAR   suppressSleepMode;	// 0:sleep allowed   1: no sleep
-
     UCHAR	kindOfModem;			// 0:off    1:Sunlink
     UCHAR	kindOfCreditcard;		// 0:off    1:Feig NFC
     UCHAR	CoinEscrow;
     UCHAR   CoinRejectUnit;
-
     UCHAR	CoinShutter;
     UCHAR	BillAcceptor;
+    // 10
     UCHAR	usevaultLock;
     UCHAR	autoAlarm;				// 1: switch on siren for 1min in doors opened unauthorized
-
     UCHAR	autoOpen;				// 1: open door covers after valid ATBcard
     UCHAR	printAccReceipt;		// 0/1
     UCHAR   printDoorReceipt;
     UCHAR   printTokenTicket;
-
     UINT	VaultFullWarnLevel;
     UINT	VaultFullErrorLevel;
+    // 30
     UINT    BattEmptyWarnLevel;
     UINT    BattEmptyErrorLevel;
+    uint32_t     padd01;
+    uint32_t     padd02;
+    uint32_t     padd03;
+    uint32_t     padd04;
+    uint32_t     padd05;
+    uint32_t     padd06;
+    uint32_t     padd07;
+    uint16_t     padd08;
+    // 64
 
 };
 
@@ -2299,6 +2326,9 @@ public:
     // countOfBills: array of up to 16 sums,    countOfBills[0]=nr of 5€-bills in stacker
     //                                          countOfBills[1] for 10€   and so on
 
+    virtual bool cash_isCollectionStarted(void) const {return false;}
+        // return true is coin collection in DC is running
+
 
     // download device controller
     virtual bool dcDownloadRequest(QString const &fileToDownload) const {
@@ -2479,10 +2509,12 @@ signals:
 
 // hier dazwischen: Umstellung ALLER Prototypen
 //  hier von =0 auf {} durch Gerhard
-
-#define HWINF_iid "Atb.Psa1256ptu5.software.HWapi/5.2"
+//#define HWINF_iid "Atb.Psa1256ptu5.software.HWapi/5.2"
     // 7.11.2023: bna functions activated
-
+#define HWINF_iid "Atb.Psa1256ptu5.software.HWapi/5.3"
+    // 14.3.24:new function bool hwapi::cash_isCollectionStarted(void) const
+    // padding three struct to 64 byte to avoid stack overflow when using
+    // signal coin attached is much faster now
 
 Q_DECLARE_INTERFACE(hwinf, HWINF_iid)