From d3f5a8d09909e9cd81dcbd0d76a31501b529ca26 Mon Sep 17 00:00:00 2001
From: Marcos Pereira <marcos.pereira@tecwash.pt>
Date: Wed, 9 Mar 2016 14:26:54 +0000
Subject: [PATCH] Write struct and multiple bytes from a specific start bytes
 address.

---
 S7.Net.Core/PLC.cs | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/S7.Net.Core/PLC.cs b/S7.Net.Core/PLC.cs
index f7d32a9..b1fa1d4 100644
--- a/S7.Net.Core/PLC.cs
+++ b/S7.Net.Core/PLC.cs
@@ -803,9 +803,14 @@ namespace S7.Net
         }
 
         public ErrorCode WriteStruct(object structValue, int db)
+        {
+            return WriteStruct(structValue, db, 0);
+        }
+
+        public ErrorCode WriteStruct(object structValue, int db, int startByteAdr)
         {
             var bytes = Types.Struct.ToBytes(structValue).ToList();
-            var errCode = WriteMultipleBytes(bytes, db);
+            var errCode = WriteMultipleBytes(bytes, db, startByteAdr);
             return errCode;
         }
 
@@ -823,9 +828,14 @@ namespace S7.Net
         /// <param name="db">The DB number</param>
         /// <returns>ErrorCode when writing (NoError if everything was ok)</returns>
         private ErrorCode WriteMultipleBytes(List<byte> bytes, int db)
+        {
+            return WriteMultipleBytes(bytes, db, 0);
+        }
+
+        private ErrorCode WriteMultipleBytes(List<byte> bytes, int db, int startByteAdr)
         {
             ErrorCode errCode = ErrorCode.NoError;
-            int index = 0;
+            int index = startByteAdr;
             try
             {
                 while (bytes.Count > 0)