diff --git a/eibApp/latex/EIB.out b/eibApp/latex/EIB.out
index 9f53715..ebb8bee 100644
--- a/eibApp/latex/EIB.out
+++ b/eibApp/latex/EIB.out
@@ -3,5 +3,8 @@
 \BOOKMARK [1][-]{section.2}{Startup}{}% 3
 \BOOKMARK [2][-]{subsection.2.1}{Startup procedure}{section.2}% 4
 \BOOKMARK [2][-]{subsection.2.2}{Configuration file EIB.CFG}{section.2}% 5
-\BOOKMARK [1][-]{section.3}{Heydeman correction}{}% 6
-\BOOKMARK [2][-]{subsection.3.1}{Take data}{section.3}% 7
+\BOOKMARK [1][-]{section.3}{Monitoring}{}% 6
+\BOOKMARK [2][-]{subsection.3.1}{Connectivity}{section.3}% 7
+\BOOKMARK [2][-]{subsection.3.2}{Signal loss}{section.3}% 8
+\BOOKMARK [1][-]{section.4}{Heydeman correction}{}% 9
+\BOOKMARK [2][-]{subsection.4.1}{Take data}{section.4}% 10
diff --git a/eibApp/latex/EIB.pdf b/eibApp/latex/EIB.pdf
index 408dd6a..38ee89a 100644
Binary files a/eibApp/latex/EIB.pdf and b/eibApp/latex/EIB.pdf differ
diff --git a/eibApp/latex/EIB.tex b/eibApp/latex/EIB.tex
index 42794ab..b6a22be 100644
--- a/eibApp/latex/EIB.tex
+++ b/eibApp/latex/EIB.tex
@@ -276,6 +276,47 @@ If not it starts the softioc which performs several initialization steps:
 \end{center}
 x denotes the channel number 0,1,2,3.
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\section{Monitoring}
+ 
+\subsection{Connectivity}
+ \begin{itemize}
+ \item  The task  {\tt EIB$\_$Start$\_$PingTask} monitors the connection to the EIB74x hardware 
+       and writes the status into the PV \PV{EIB:CONNECTED}. If the connection is interrupted it peridically tries to reconnect.
+ 
+ \item  After reestablishing the connection, the status of the index marks is read and the HOMED flags of the encoders are set accordingly.
+ \item   If the EIB was powercycled, the HOMED flags are set to FALSE.
+
+ \end{itemize}
+
+  The same procedure applies after a restart of the softioc. 
+  By this, the necessity of an new index search is avoided.
+ 
+ 
+\subsection{Signal loss}
+ \begin{itemize}
+ \item  When an encoder is disconnected while the softioc tries to read it, the EIB sets the flag  "signal amplitude error" in the encoder status. 
+  The softioc indicates this in the \PV {EIB:CH$\_$x$\_$SIGNALERROR}. 
+  
+  \item  Unfortunately, this works only when the encoder readout happens during the time when the encoder is disconnected.
+  If the encoder is removed and reconnected between two readouts, the encoder status does not reflect this in the "signal amplitude error" flag.
+  
+ \item   What can be seen is that the status reports an "Frequency exceeded" in that case.
+         This could be reported to the user with a recommendation to start an index search.
+         
+ \end{itemize}
+ 
+ 
+ 
+ 
+  
+ 
+  
+  
+
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \section{Heydeman correction}
 
diff --git a/eibApp/src/myEIB.c b/eibApp/src/myEIB.c
index 78e6a1d..de6861c 100644
--- a/eibApp/src/myEIB.c
+++ b/eibApp/src/myEIB.c
@@ -162,6 +162,7 @@ int  EIB_Connect (char *hostname);
 int  EIB_Init_Enc(int enc_nr);      /* initialize selected encoder */
 void EIB_StopRef( int enc_nr);
 void EIB_Clear_RingBuffer(int enc_nr);
+void EIB_ShowIO(void);
 
 /****************************************************************************/
 void ReadHeyFile(char *filename, HEYARRAY  *h)
@@ -636,6 +637,9 @@ int i,j;
  eib.handle   = 0;
  eib.connected= 0;
  eib.num      = 0;    /* how many axis? -> initialized in EIB_connect */
+ 
+ eib.input.num_ports =0;
+ eib.output.num_ports=0;
 
  strncpy(eib.fw_version, "\0", 20);          
  sprintf(eib.hostname ,"EIB741-639546320.psi.ch");
@@ -660,6 +664,7 @@ int i,j;
 
    for (j=0;j<NUMHEY;j++) eib.enc [i].Correction[j]=0;
 
+   
   }
 
 } 
@@ -2114,7 +2119,10 @@ void EIB_ShowEib()
   printf(" cdbg          : %i\n",  cdbg  );          
   printf(" rdbg          : %i\n",  rdbg  );          
   printf(" verbose       : %i\n",  verbose  );          
-
+  printf(" #input ports  : %li\n", eib.input.num_ports);
+  printf(" #output ports : %li\n", eib.output.num_ports);
+  EIB_ShowIO();
+  
   for (i=0;i<NUM_OF_AXIS;i++)
     {
       printf("\n Index %i, axehandle = %i\n",i,eib.axishandles[i]);
@@ -2337,8 +2345,8 @@ void EIB_InitIO_old(void)
   printf("    level = %li\n",level);
                         
 }
-/************************************************************************************/
 
+/************************************************************************************/
 void EIB_InitIO(void)
 {
   EIB7_HANDLE   eibh;              /* EIB handle              */
@@ -2348,63 +2356,132 @@ void EIB_InitIO(void)
   
   eibh            = eib.handle;
  
-  err =  EIB7GetIO(eibh, &(eib.input.set[0]) ,NUM_IO_PORTS, &(eib.input.num_io_ports),
-		         &(eib.output.set[0]),NUM_IO_PORTS, &(eib.output.num_io_ports) );
+  err =  EIB7GetIO(eibh, &(eib.input.set[0]) ,NUM_IO_PORTS, &(eib.input.num_ports),
+		         &(eib.output.set[0]),NUM_IO_PORTS, &(eib.output.num_ports) );
                         
   printf(" EIB_InitIo     : err = %i\n",err);
   CheckError(err); 
-  printf("    ilen  = %li\n",eib.input.num_io_ports);
-  printf("    olen  = %li\n",eib.output.num_io_ports);
+  printf("    num input  ports  = %li\n",eib.input.num_ports);
+  printf("    num output ports  = %li\n",eib.output.num_ports);
 
-  for (port=0;port<eib.input.num_io_ports;port++)
+  for (port=0;port<eib.output.num_ports;port++)
    {
       err = EIB7InitOutput(eib.output.set[port], 1, EIB7_MD_Enable);
-      printf(" EIB7InitOutput[%1i] : err = %i\n",port,err);
+      if (verbose) printf(" EIB7InitOutput[%1i] : err = %i\n",port,err);
       CheckError(err); 
    }
+
+  for (port=0;port<eib.input.num_ports;port++)
+   {
+      err = EIB7InitInput(eib.input.set[port], 1, EIB7_MD_Enable);
+      if (verbose)  printf(" EIB7InitInput[%1i] : err = %i\n",port,err);
+      CheckError(err); 
+   }
+   
 }
 
 /************************************************************************************/
-void EIB_SetIO(int port, unsigned long level)
+/*  z.B. num_io_ports = 4 ,  port =[0,1,2,3]                                        */
+/* initialize num_ports = 0                                                      */
+int EIB_ValidOutPort(int port)
+{
+ if (port >= eib.output.num_ports) return(MON_ERROR);
+ if (port < 0                    ) return(MON_ERROR);
+
+ return(MON_NO_ERROR); 
+}
+
+/************************************************************************************/
+void EIB_SetOutput(int port, unsigned long level)
 { 
   int           err;
 
-  printf(" EIB7WriteIO[%i] to level = %li\n",port, level);
+  if ( EIB_ValidOutPort(port))
+   {
+    if (verbose)
+      {
+       printf(" EIB7WriteIO: invalid port %i, maxport = %li\n",port, eib.output.num_ports);
+      }
+      return;
+   }
+   else
+     printf(" EIB7WriteIO[%i] to level = %li\n",port, level); 
 
-  err = EIB7WriteIO(eib.output.set[port], level);
 
-  CheckError(err); 
-  
+   err = EIB7WriteIO(eib.output.set[port], level);
+
+   CheckError(err); 
+
 }
+
 /************************************************************************************/
-void EIB_ReadIO(int port, unsigned long *level)
+void EIB_ReadOutput(int port, unsigned long *level)
+{
+  EIB7_IOMODE   mode;
+  int           err;
+
+  if (verbose)
+   {
+     if ( EIB_ValidOutPort(port))
+      {
+       printf(" EIB_ReadOutput[%i]: invalid port , maxport = %li\n",port, eib.output.num_ports);
+       return;
+      }
+     else
+       printf("EIB_ReadOutput[%i]: level = %li\n",port, *level); 
+   }
+   
+
+   err = EIB7ReadIO(eib.output.set[port], &mode, level);
+   CheckError(err); 
+
+}
+
+/************************************************************************************/
+void EIB_ReadInput(int port, unsigned long *level)
 {
   EIB7_IOMODE   mode;
   int           err;
   
-  err = EIB7ReadIO(eib.output.set[port], &mode, level);
-
-/*  printf(" EIB7ReadIO[%i] \n",port );
-  printf("    mode  = %x\n" ,mode);
-  printf("    level = %li\n",*level);
-*/
+  err = EIB7ReadIO(eib.input.set[port], &mode, level);
   CheckError(err); 
                         
 }
+
 /************************************************************************************/
 void EIB_ShowIO(void)
 {
   int           port;
   unsigned long level;
   
-  printf(" EIB_ShowIO: levels =  ");
-  for (port=0;port<eib.input.num_io_ports;port++)
+  if (eib.output.num_ports)
    {
-      EIB_ReadIO  (port ,&level);
-      printf(" %li ",level);      
-   }  
-  printf("\n");      
-
+    printf(" EIB_ShowIO: Output levels (%li) =  ",eib.output.num_ports);
+    for (port=0;port < eib.output.num_ports;port++)
+     {
+        EIB_ReadOutput  (port ,&level);
+        printf(" %li ",level);      
+     } 
+    printf("\n");      
+   }   
+  else 
+    printf(" EIB_ShowIO: No output ports configured\n");
+   
+   
+   
+  if (eib.input.num_ports)
+   {
+    printf(" EIB_ShowIO: Input levels  (%li) =  ", eib.input.num_ports);
+    for (port=0;port < eib.input.num_ports;port++)
+     {
+        EIB_ReadInput  (port ,&level);
+        printf(" %li ",level);      
+     }  
+    printf("\n");      
+   }
+  else 
+    printf(" EIB_ShowIO: No input  ports configured\n");
+   
 }
 
 /************************************************************************************/
@@ -2461,8 +2538,8 @@ enc_nr = 0;
   printf(" (W) Start Ping Tak  ....... (W)\n");
   printf(" (Z) EXIT Menu ............. (Z)\n");
   printf(" (1) InitIO ................ (1)\n");
-  printf(" (2) WriteIO ............... (2)\n");
-  printf(" (3) ReadIO ................ (3)\n");
+  printf(" (2) WriteOutput............ (2)\n");
+  printf(" (3) ReadOutput ............ (3)\n");
   printf(" (4) ShowIO ................ (4)\n");
   printf("  Input : ");
   choice = selection();
@@ -2567,16 +2644,17 @@ enc_nr = 0;
              printf("value ");          
              scanf("%li",&level);CR(); 
                                       
-             EIB_SetIO(port, level);
+             EIB_SetOutput(port, level);
              break;
 
   case '3' : printf("Read from port ");
-             scanf("%i",&port);CR();             
+             scanf("%i",&port);             
            
-             EIB_ReadIO(port, &level);
+             EIB_ReadOutput(port, &level);
              printf("value = %li\n",level);
              break;
-  case '4' : EIB_ShowIO( );
+             
+  case '4' : EIB_ShowIO();
              break;
              
   case 'V' : EIB_ClearEncoderError(enc_nr); 
diff --git a/eibApp/src/myEIB.h b/eibApp/src/myEIB.h
index 18e03a4..a904cf9 100644
--- a/eibApp/src/myEIB.h
+++ b/eibApp/src/myEIB.h
@@ -32,7 +32,7 @@ typedef struct  T_Data DataArr[NUMPOINTS];
 struct T_IO
 { 
   EIB7_IO       set[NUM_IO_PORTS];
-  unsigned long num_io_ports;         /* num of valid io-handles  0,1,2,3 */
+  unsigned long num_ports;         /* num of valid io-handles  0,1,2,3 */
 };
 typedef struct  T_IO IO;