diff --git a/S7.Net.UnitTest/Helpers/TestSmallClass.cs b/S7.Net.UnitTest/Helpers/TestSmallClass.cs
new file mode 100644
index 0000000..de2a9d2
--- /dev/null
+++ b/S7.Net.UnitTest/Helpers/TestSmallClass.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace S7.UnitTest.Helpers
+{
+    class TestSmallClass
+    {
+        public bool Bool1 { get; set; }
+    }
+}
diff --git a/S7.Net.UnitTest/S7.Net.UnitTest.csproj b/S7.Net.UnitTest/S7.Net.UnitTest.csproj
index 5aca96b..75329b1 100644
--- a/S7.Net.UnitTest/S7.Net.UnitTest.csproj
+++ b/S7.Net.UnitTest/S7.Net.UnitTest.csproj
@@ -70,6 +70,7 @@
     <Compile Include="Helpers\TestClassWithPrivateSetters.cs" />
     <Compile Include="Helpers\TestLongClass.cs" />
     <Compile Include="S7NetTestsAsync.cs" />
+    <Compile Include="Helpers\TestSmallClass.cs" />
     <Compile Include="Snap7\snap7.net.cs" />
     <Compile Include="Helpers\TestClass.cs" />
     <Compile Include="Helpers\TestStruct.cs" />
@@ -118,4 +119,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
\ No newline at end of file
+</Project>
diff --git a/S7.Net.UnitTest/S7NetTestsSync.cs b/S7.Net.UnitTest/S7NetTestsSync.cs
index 8535852..6889a16 100644
--- a/S7.Net.UnitTest/S7NetTestsSync.cs
+++ b/S7.Net.UnitTest/S7NetTestsSync.cs
@@ -397,19 +397,51 @@ namespace S7.Net.UnitTest
         {
             Assert.IsTrue(plc.IsConnected, "Before executing this test, the plc must be connected. Check constructor.");
 
-            ushort val = 16384;
-            plc.Write("DB2.DBW16384", val);
-            ushort result = (ushort)plc.Read("DB2.DBW16384");
-            Assert.AreEqual(val, result, "A ushort goes from 0 to 64512");
+            bool val = true;
+            plc.Write("DB2.DBX0.5", val);
+            bool result = (bool)plc.Read("DB2.DBX0.5");
+            Assert.AreEqual(val, result);
 
-            ushort val2 = 129;
-            plc.Write("DB2.DBW16", val2);
-            ushort result2 = (ushort)plc.Read("DB2.DBW16");
-            Assert.AreEqual(val2, result2, "A ushort goes from 0 to 64512");
+            ushort val1 = 16384;
+            plc.Write("DB2.DBW16384", val1);
+            ushort result1 = (ushort)plc.Read("DB2.DBW16384");
+            Assert.AreEqual(val1, result1, "A ushort goes from 0 to 64512");
+
+            bool val2 = true;
+            plc.Write("DB2.DBX8192.7", val2);
+            bool result2 = (bool)plc.Read("DB2.DBX8192.7");
+            Assert.AreEqual(val2, result2);
+
+            ushort val3 = 129;
+            plc.Write("DB2.DBW16", val3);
+            ushort result3 = (ushort)plc.Read("DB2.DBW16");
+            Assert.AreEqual(val3, result3, "A ushort goes from 0 to 64512");
+
+            byte[] val4 = new byte[] { 0x12, 0x34 };
+            plc.Write("DB2.DBB2048", val4[0]);
+            plc.Write("DB2.DBB2049", val4[1]);
+            byte result4b0 = (byte)plc.Read("DB2.DBB2048");
+            byte result4b1 = (byte)plc.Read("DB2.DBB2049");
+            Assert.AreEqual(val4[0], result4b0);
+            Assert.AreEqual(val4[1], result4b1);
+
+            bool val6 = true;
+            plc.Write("DB2.DBX16384.6", val6);
+            bool result6 = (bool)plc.Read("DB2.DBX16384.6");
+            Assert.AreEqual(val6, result6);
 
             var dataItems = new List<DataItem>()
             {
                 new DataItem
+                {
+                    Count = 1,
+                    DataType = DataType.DataBlock,
+                    DB = 2,
+                    StartByteAdr = 0,
+                    BitAdr = 5,
+                    VarType = VarType.Bit
+                }
+                ,new DataItem
                 {
                     Count = 1,
                     DataType = DataType.DataBlock,
@@ -418,19 +450,61 @@ namespace S7.Net.UnitTest
                     VarType = VarType.Word
                 },
                 new DataItem
+                {
+                    Count = 1,
+                    DataType = DataType.DataBlock,
+                    DB = 2,
+                    StartByteAdr = 8192,
+                    BitAdr = 7,
+                    VarType = VarType.Bit
+                },
+                new DataItem
                 {
                     Count = 1,
                     DataType = DataType.DataBlock,
                     DB = 2,
                     StartByteAdr = 16,
                     VarType = VarType.Word
-                }
+                },
+                // single byte
+                new DataItem
+                {
+                    Count = 1,
+                    DataType = DataType.DataBlock,
+                    DB = 2,
+                    StartByteAdr = 2048,
+                    VarType = VarType.Byte
+                },
+                // multiple bytes
+                new DataItem
+                {
+                    Count = 2,
+                    DataType = DataType.DataBlock,
+                    DB = 2,
+                    StartByteAdr = 2048,
+                    VarType = VarType.Byte
+                },
+                new DataItem
+                {
+                    Count = 1,
+                    DataType = DataType.DataBlock,
+                    DB = 2,
+                    StartByteAdr = 16384,
+                    BitAdr = 6,
+                    VarType = VarType.Bit
+                },
             };
 
             plc.ReadMultipleVars(dataItems);
 
             Assert.AreEqual(dataItems[0].Value, val);
-            Assert.AreEqual(dataItems[1].Value, val2);
+            Assert.AreEqual(dataItems[1].Value, val1);
+            Assert.AreEqual(dataItems[2].Value, val2);
+            Assert.AreEqual(dataItems[3].Value, val3);
+            Assert.AreEqual(dataItems[4].Value, val4[0]);
+            Assert.AreEqual(((byte[])dataItems[5].Value)[0], val4[0]);  //dataItem[5].Value should be byte[2]
+            Assert.AreEqual(((byte[])dataItems[5].Value)[1], val4[1]);
+            Assert.AreEqual(dataItems[6].Value, val6);
         }
 
         /// <summary>
@@ -829,6 +903,20 @@ namespace S7.Net.UnitTest
             }
         }
 
+        [TestMethod]
+        public void T28_ReadClass_DoesntCrash_When_ReadingLessThan1Byte()
+        {
+            Assert.IsTrue(plc.IsConnected, "Before executing this test, the plc must be connected. Check constructor.");
+
+            var tc = new TestSmallClass();
+            tc.Bool1 = true;
+
+            plc.WriteClass(tc, DB2);
+            var tc2 = plc.ReadClass<TestSmallClass>(DB2);
+
+            Assert.AreEqual(tc.Bool1, tc2.Bool1);
+        }
+
         #endregion
 
         #region Private methods
diff --git a/S7.Net/Types/Class.cs b/S7.Net/Types/Class.cs
index 794b469..26f4742 100644
--- a/S7.Net/Types/Class.cs
+++ b/S7.Net/Types/Class.cs
@@ -99,6 +99,10 @@ namespace S7.Net.Types
                     numBytes = GetIncreasedNumberOfBytes(numBytes, property.PropertyType);
                 }
             }
+            // enlarge numBytes to next even number because S7-Structs in a DB always will be resized to an even byte count
+            numBytes = Math.Ceiling(numBytes);
+            if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
+                numBytes++;
             return (int)numBytes;
         }
 
diff --git a/S7.Net/Types/DataItem.cs b/S7.Net/Types/DataItem.cs
index 454497f..5f48586 100644
--- a/S7.Net/Types/DataItem.cs
+++ b/S7.Net/Types/DataItem.cs
@@ -25,6 +25,11 @@
         /// </summary>
         public int StartByteAdr { get; set; }
 
+        /// <summary>
+        /// Addess of bit to read from StartByteAdr
+        /// </summary>
+        public byte BitAdr { get; set; }
+
         /// <summary>
         /// Number of variables to read
         /// </summary>