diff --git a/tools/model_generator/genmodel.jar b/tools/model_generator/genmodel.jar
index aa36640..6c45543 100644
Binary files a/tools/model_generator/genmodel.jar and b/tools/model_generator/genmodel.jar differ
diff --git a/tools/model_generator/src/com/libiec61850/scl/model/DataModelValue.java b/tools/model_generator/src/com/libiec61850/scl/model/DataModelValue.java
index 5eeb67e..0798046 100644
--- a/tools/model_generator/src/com/libiec61850/scl/model/DataModelValue.java
+++ b/tools/model_generator/src/com/libiec61850/scl/model/DataModelValue.java
@@ -23,6 +23,8 @@ package com.libiec61850.scl.model;
  *	See COPYING file for the complete license text.
  */
 
+import java.util.Base64;
+
 import com.libiec61850.scl.types.EnumerationType;
 import com.libiec61850.scl.types.IllegalValueException;
 import com.libiec61850.scl.types.SclType;
@@ -128,6 +130,15 @@ public class DataModelValue {
         case UNICODE_STRING_255:
         	this.value = value;
         	break;
+        	
+        case OCTET_STRING_64:
+            try {
+                this.value = Base64.getDecoder().decode(value);
+            }
+            catch (IllegalArgumentException e) {
+                throw new IllegalValueException("Val element for Octet64 type does not contain a valid base64 encoded string");
+            }
+            break;
             
         case VISIBLE_STRING_32:
         case VISIBLE_STRING_64:
diff --git a/tools/model_generator/src/com/libiec61850/tools/StaticModelGenerator.java b/tools/model_generator/src/com/libiec61850/tools/StaticModelGenerator.java
index d7b8b9e..2db231b 100644
--- a/tools/model_generator/src/com/libiec61850/tools/StaticModelGenerator.java
+++ b/tools/model_generator/src/com/libiec61850/tools/StaticModelGenerator.java
@@ -727,6 +727,20 @@ public class StaticModelGenerator {
         }
 
     }
+    
+    private void appendHexArrayString(StringBuffer buffer, byte[] byteArray) {
+        
+        buffer.append("{");
+        for (int i = 0; i < byteArray.length; i++) {
+            
+            if (i == 0)
+                buffer.append(String.format("0x%02X", byteArray[i]));
+            else
+                buffer.append(String.format(", 0x%02X", byteArray[i]));
+        }
+        buffer.append("}");
+
+    }
 
     private void printValue(String daName, DataAttribute dataAttribute, DataModelValue value) {
 
@@ -759,6 +773,21 @@ public class StaticModelGenerator {
         case BOOLEAN:
             buffer.append("MmsValue_newBoolean(" + value.getValue() + ");");
             break;
+            
+        case OCTET_STRING_64:
+            {
+                String daValName = daName + "__val";
+                
+                buffer.append("MmsValue_newOctetString(0, 64);\n");
+                buffer.append("uint8_t " + daValName + "[] = ");
+                appendHexArrayString(buffer, (byte[]) value.getValue());
+                buffer.append(";\n");
+                buffer.append("MmsValue_setOctetString(");
+                buffer.append(daName);
+                buffer.append(".mmsValue, " + daValName + ", " + ((byte[])value.getValue()).length  + ");\n");
+            }
+            break;
+            
         case UNICODE_STRING_255:
             buffer.append("MmsValue_newMmsString(\"" + value.getValue() + "\");");
             break;