diff --git a/SiemensS7/Siemens-S7-Test/TestMainForm.cs b/SiemensS7/Siemens-S7-Test/TestMainForm.cs
index f34fda3..55bc384 100644
--- a/SiemensS7/Siemens-S7-Test/TestMainForm.cs
+++ b/SiemensS7/Siemens-S7-Test/TestMainForm.cs
@@ -651,10 +651,15 @@ namespace Siemens_S7_Test
                     break;
                 case "byte":
                 default:
-                    for (int i = 0; i < memByteRead.Length; i++)
+                    // attenzione: byte sono GIRATI x cui DEVO invertire lettura pari/dispari...
+                    for (int i = 0; i < memByteRead.Length / 2; i++)
                     {
-                        byteVal = Convert.ToString(memByteRead[i], 2).PadLeft(8, '0');
-                        contenuto += string.Format("B{0:000}: {1} | {2}{3}", i, byteVal, memByteRead[i], Environment.NewLine);
+                        // dispari
+                        byteVal = Convert.ToString(memByteRead[i * 2 + 1], 2).PadLeft(8, '0');
+                        contenuto += string.Format("B{0:000}: {1} | {2}{3}", i * 2, byteVal, memByteRead[i * 2 + 1], Environment.NewLine);
+                        // pari
+                        byteVal = Convert.ToString(memByteRead[i * 2], 2).PadLeft(8, '0');
+                        contenuto += string.Format("B{0:000}: {1} | {2}{3}", i * 2 + 1, byteVal, memByteRead[i * 2], Environment.NewLine);
                     }
                     break;
             }
@@ -691,7 +696,9 @@ namespace Siemens_S7_Test
                 byte.TryParse(txtWriteVal1.Text, out num2write);
                 byte[] DB_Byte = new byte[1];
                 DB_Byte[0] = num2write;
-                currPLC.WriteBytes(DataType.DataBlock, memoria.DbNum, memoria.indiceMem, DB_Byte);
+                // attenzione endianness! invertire byte...
+                int fixIndex = memoria.indiceMem % 2 == 0 ? memoria.indiceMem + 1 : memoria.indiceMem - 1;
+                currPLC.WriteBytes(DataType.DataBlock, memoria.DbNum, fixIndex, DB_Byte);
                 titolo = string.Format("WRITE BLOCK MEM: {0}", txtWriteAddr1.Text);
                 contenuto = "";
                 contenuto += string.Format("DT: {0} | DbNum: {1} | indiceMem: {2} | num2write: {3}{4}{4}", DataType.DataBlock, memoria.DbNum, memoria.indiceMem, num2write, Environment.NewLine);