Minor changes

Renamed tachoLimit back to limitValue, fixed comments and minor bugs, and
made commInterface private.

source/EV3.m

@@ -109,9 +109,6 @@ classdef EV3 < handle
         %isConnected -  Virtual brick connected to physical one?
         isConnected = false; 
                     
-        %commInterface -  Interface to communication layer
-        commInterface = 0;
-                    
         %% Motors and Sensors
         
         motorA;
@@ -125,6 +122,11 @@ classdef EV3 < handle
         sensor4;            
     end
     
+    properties (Access = 'private')
+        %commInterface -  Interface to communication layer
+        commInterface = 0;
+    end
+    
     properties (Hidden, Access = 'private')  % Hidden properties for internal use only
         init = true;  % Indicates 'init-phase' (Set to 1 as long as constructor is running)
     end

source/Sensor.m

@@ -115,7 +115,7 @@ classdef Sensor < handle
             
             type = sensor.type;
             if ~isModeValid(mode, type)
-                error('Sensor::set.mode: Sensor mode is not valid for connected sensor type.');
+                error('Sensor::set.mode: Invalid sensor mode.');
             else
                 sensor.mode = mode;
                 
@@ -245,9 +245,9 @@ classdef Sensor < handle
             if ~sensor.connectedToBrick
                 error(['Sensor::getTachoCount: Sensor-Object not connected to comm handle.',...
                        'You have to call sensor.connect(commInterface) first!']);
-%             elseif ~sensor.physicalSensorConnected
-%                 error('Sensor::getTachoCount: No physical sensor connected to Port %d',...
-%                        sensor.port+1);
+            elseif ~sensor.physicalSensorConnected
+                error('Sensor::getTachoCount: No physical sensor connected to Port %d',...
+                       sensor.port+1);
             end
             
             sensor.commInterface.inputReadSI(0, sensor.port, mode);  % Reading a value implicitly