fix everything for merge Field

src/main/java/ch/hevs/isi/field/FloatRegister.java

@@ -8,6 +8,8 @@ import java.util.HashMap;
 public class FloatRegister extends ModbusRegister{
     private Float value;
     private FloatDataPoint fdp;
+    private int range;
+    private int offset;
 
     /**
      * public constructor of the Float Register
@@ -18,14 +20,22 @@ public class FloatRegister extends ModbusRegister{
      * @param range range of the datapoint value
      * @param offset offset of the datapoint value
      */
-    public FloatRegister(String label, boolean isOutPut, int address, float range, float offset) {
+    public FloatRegister(String label, boolean isOutPut, int address, int range, int offset) {
         this.fdp = new FloatDataPoint(label, isOutPut);     //create an empty datapoint for the NullPointerException
         updateMapOfRegisters(label,address);    //add the address to the map
+        this.range = range;
+        this.offset = offset;
     }
 
     @Override
     public void read() {
-        fdp.setValue(ModbusAccessor.getMySelf().readFloat(this.getAddress()));  //read the value
+        if(fdp.isOutput()){
+            return;     //if it is an output datapoint, it is not read
+        }
+        Float value = ModbusAccessor.getMySelf().readFloat(this.getAddress()); //read the value
+        value = value * range;
+        value = value + offset;
+        fdp.setValue(value);
     }
 
     @Override