diff --git a/src/main/java/de/hottis/mbusMaster/ElectricEnergyDataObject.java b/src/main/java/de/hottis/mbusMaster/ElectricEnergyDataObject.java
index a7422ef..1ba3208 100644
--- a/src/main/java/de/hottis/mbusMaster/ElectricEnergyDataObject.java
+++ b/src/main/java/de/hottis/mbusMaster/ElectricEnergyDataObject.java
@@ -6,14 +6,16 @@ public class ElectricEnergyDataObject extends ADataObject {
 	private static final long serialVersionUID = 1L;
 	static final String ENERGY_KEY = "energy";
 	static final String POWER_KEY = "power";
+	static final String ERROR_RATIO_KEY = "errorRatio";
 	static final String TABLE_NAME = "ElectricEnergy";
   static final String KIND_NAME = "ElectricEnergy";
 	
-	public ElectricEnergyDataObject(String name, double energy, double power) {
+	public ElectricEnergyDataObject(String name, double energy, double power, double errorRatio) {
 		super(name, KIND_NAME);
 		HashMap<String, Object> values = new HashMap<String, Object>();
 		values.put(ENERGY_KEY, energy);
 		values.put(POWER_KEY, power);
+		values.put(ERROR_RATIO_KEY, errorRatio);
 		setValues(values);
 	}
 	
diff --git a/src/main/java/de/hottis/mbusMaster/FinderOnePhasePowerMeter.java b/src/main/java/de/hottis/mbusMaster/FinderOnePhasePowerMeter.java
index d3caa82..321d824 100644
--- a/src/main/java/de/hottis/mbusMaster/FinderOnePhasePowerMeter.java
+++ b/src/main/java/de/hottis/mbusMaster/FinderOnePhasePowerMeter.java
@@ -11,6 +11,6 @@ public class FinderOnePhasePowerMeter extends MbusDevice {
   }
 
   public ADataObject getDataObject() throws MbusException {
-    return new ElectricEnergyDataObject(this.getName(), this.getValue("energy"), this.getValue("activePower"));
+    return new ElectricEnergyDataObject(this.getName(), this.getValue("energy"), this.getValue("activePower"), this.getErrorRatio());
   }
 }
\ No newline at end of file
diff --git a/src/main/java/de/hottis/mbusMaster/FinderThreePhasePowerMeter.java b/src/main/java/de/hottis/mbusMaster/FinderThreePhasePowerMeter.java
index 8076e7d..a33e075 100644
--- a/src/main/java/de/hottis/mbusMaster/FinderThreePhasePowerMeter.java
+++ b/src/main/java/de/hottis/mbusMaster/FinderThreePhasePowerMeter.java
@@ -21,6 +21,6 @@ public class FinderThreePhasePowerMeter extends MbusDevice {
   }
 
   public ADataObject getDataObject() throws MbusException {
-    return new ElectricEnergyDataObject(this.getName(), this.getValue("energy"), this.getValue("activePowerTotal"));
+    return new ElectricEnergyDataObject(this.getName(), this.getValue("energy"), this.getValue("activePowerTotal"), this.getErrorRatio());
   }
 }
\ No newline at end of file
diff --git a/src/main/java/de/hottis/mbusMaster/MbusDevice.java b/src/main/java/de/hottis/mbusMaster/MbusDevice.java
index 32b06db..18aa237 100644
--- a/src/main/java/de/hottis/mbusMaster/MbusDevice.java
+++ b/src/main/java/de/hottis/mbusMaster/MbusDevice.java
@@ -21,6 +21,9 @@ abstract public class MbusDevice {
   private byte address;
   private int queryPeriod; // in seconds
 
+  private int successCnt;
+  private int errorCnt;
+
   protected List<DataRecord> dataRecords;
   protected boolean validlyParsed;
 
@@ -41,9 +44,31 @@ abstract public class MbusDevice {
     this.address = address;
     this.queryPeriod = queryPeriod;
     this.validlyParsed = false;
+    this.successCnt = 0;
+    this.errorCnt = 0;
     this.dataPoints = new ArrayList<>();
   }
 
+  public void incSuccessCnt() {
+    this.successCnt++;
+  }
+
+  public void incErrorCnt() {
+    this.errorCnt++;
+  }
+
+  public void resetSuccessCnt() {
+    this.successCnt = 0;
+  }
+
+  public void resetErrorCnt() {
+    this.errorCnt = 0;
+  }
+
+  public double getErrorRatio() {
+    return this.errorCnt / this.successCnt;
+  }
+
   public void parse(byte[] frame) throws MbusException {
     try {
       MBusMessage mbusMsg = MBusMessage.decode(frame, frame.length);
@@ -82,6 +107,7 @@ abstract public class MbusDevice {
     StringBuffer sb = new StringBuffer();
     sb.append(this.getClass().getName() + " [");
     sb.append("<name=" + this.getName() + "><address=" + this.getAddress() + ">");
+    sb.append("<successCnt=" + this.successCnt + "><errorCnt=" + this.errorCnt + ">");
     if (longOutput && this.validlyParsed) {
       sb.append(this.dataToString());
     }
diff --git a/src/main/java/de/hottis/mbusMaster/MbusScheduledQuerier.java b/src/main/java/de/hottis/mbusMaster/MbusScheduledQuerier.java
index d8b2194..3ccaf02 100644
--- a/src/main/java/de/hottis/mbusMaster/MbusScheduledQuerier.java
+++ b/src/main/java/de/hottis/mbusMaster/MbusScheduledQuerier.java
@@ -60,8 +60,10 @@ public class MbusScheduledQuerier extends Thread {
             logger.info("Got: " + device.toString());
             this.queue.add(device.getDataObject());
             
+            device.incSuccessCnt();
             successCnt++;
           } catch (IOException e) {
+            device.incErrorCnt();
             errCnt++;
             logger.error("Error " + e.toString() + " in Meterbus dialog for device " + device.shortString());
           }