Index: webserver/example/EnergyMeters/Source/EnergyMeters/Meters.c
===================================================================
--- webserver/example/EnergyMeters/Source/EnergyMeters/Meters.c (revision 42)
+++ webserver/example/EnergyMeters/Source/EnergyMeters/Meters.c (revision 45)
@@ -40,5 +40,5 @@
   vSemaphoreCreateBinary( xMetersSemaphore );
 	
-  //Init_P2_0(); /* init GPIO for meters */
+  Init_P2_0(); /* init GPIO for meters */
   // TODO: put this in again, right now it interferes with Solar UART3!
 
Index: webserver/example/EnergyMeters/Source/EnergyMeters/Meters_ISRs.c
===================================================================
--- webserver/example/EnergyMeters/Source/EnergyMeters/Meters_ISRs.c (revision 43)
+++ webserver/example/EnergyMeters/Source/EnergyMeters/Meters_ISRs.c (revision 45)
@@ -96,4 +96,9 @@
   unsigned long long currentTime = getEpochTimeWithMs(); /* current epoch time with ms in ms */
 
+  if (portNum >= NUMBER_OF_METERS) /* allowed index: 0 to (NUMBER_OF_METERS-1) */
+  {
+    return; /* invalid value */
+  }
+
   globalValue++;
     //   LCD_cls();
Index: webserver/example/EnergyMeters/Source/EnergyMeters/MetersIncludes.h
===================================================================
--- webserver/example/EnergyMeters/Source/EnergyMeters/MetersIncludes.h (revision 30)
+++ webserver/example/EnergyMeters/Source/EnergyMeters/MetersIncludes.h (revision 45)
@@ -3,7 +3,7 @@
 unsigned long long getEpochTimeWithMs(void);
 
-#define NUMBER_OF_METERS 10 /* the number of meters we use */
+#define NUMBER_OF_METERS 11 /* the number of meters we use */
 
-#define METER_INDEX_GAS 0 /* index of the gas meter data */
+#define METER_INDEX_GAS 10 /* index of the gas meter data */
 
 #define DEBOUNCE_TICK_THRESHOLD_MS 50 /* when two ticks are less than this time period apart, the second tick is ignored (debouncing) */