diff --git a/Sharp7.Rx.Tests/S7ValueConverterTests.cs b/Sharp7.Rx.Tests/S7ValueConverterTests.cs
index 54bf85c..0cdf048 100644
--- a/Sharp7.Rx.Tests/S7ValueConverterTests.cs
+++ b/Sharp7.Rx.Tests/S7ValueConverterTests.cs
@@ -31,6 +31,7 @@ public class S7ValueConverterTests
     [TestCase(0.25f, "DB0.D0", new byte[] {0x3E, 0x80, 0x00, 0x00})]
     [TestCase(0.25, "DB0.D0", new byte[] {0x3E, 0x80, 0x00, 0x00})]
     [TestCase("ABCD", "DB0.string0.4", new byte[] {0x00, 0x04, 0x41, 0x42, 0x43, 0x44})]
+    [TestCase("ABCD", "DB0.string0.4", new byte[] {0x00, 0xF0, 0x41, 0x42, 0x43, 0x44})] // Clip to length in Address
     [TestCase("ABCD", "DB0.DBB0.4", new byte[] {0x41, 0x42, 0x43, 0x44})]
     public void Parse<T>(T expected, string address, byte[] data)
     {
diff --git a/Sharp7.Rx/S7ValueConverter.cs b/Sharp7.Rx/S7ValueConverter.cs
index 9662fb3..9533809 100644
--- a/Sharp7.Rx/S7ValueConverter.cs
+++ b/Sharp7.Rx/S7ValueConverter.cs
@@ -63,7 +63,13 @@ namespace Sharp7.Rx
             if (typeof(TValue) == typeof(string))
                 if (address.Type == DbType.String)
                 {
-                    return (TValue) (object) Encoding.ASCII.GetString(buffer);
+                    // First byte is maximal length
+                    // Second byte is actual length
+                    // https://cache.industry.siemens.com/dl/files/480/22506480/att_105176/v1/s7_scl_string_parameterzuweisung_e.pdf
+
+                    var length = Math.Min(address.Length, buffer[1]);
+                    
+                    return (TValue) (object) Encoding.ASCII.GetString(buffer, 2, length);
                 }
                 else
                 {