diff --git a/CMS_CORE_Library/Siemens/Nc_Siemens.cs b/CMS_CORE_Library/Siemens/Nc_Siemens.cs
index f1a0445..4981157 100644
--- a/CMS_CORE_Library/Siemens/Nc_Siemens.cs
+++ b/CMS_CORE_Library/Siemens/Nc_Siemens.cs
@@ -1115,7 +1115,8 @@ namespace CMS_CORE_Library.Siemens
         public override CmsError PLC_RM154Data(ref List<M154DataModel> data, ref bool MTCOnOff)
         {
             MTCOnOff = false;
-            CmsError cmsError = MEM_RWBoolean(R, 0, M154_SWITCH_ONOFF.MemType, M154_SWITCH_ONOFF.Address, M154_SWITCH_ONOFF.SubAddress, ref MTCOnOff);
+            CmsError cmsError = MEM_RWBoolean(R, 0, M154_SWITCH_ONOFF.MemType, M154_SWITCH_ONOFF.Address, M154_SWITCH_ONOFF.SubAddress, 1, ref MTCOnOff);
+
             if (cmsError.IsError())
                 return cmsError;
 
@@ -5830,7 +5831,7 @@ namespace CMS_CORE_Library.Siemens
 
         internal static MEMORY_CELL M154_STROBE = new MEMORY_CELL(MEMORY_TYPE.Siemens_DB, TABLE, 3042, 1);
         internal static MEMORY_CELL M154_ACK = new MEMORY_CELL(MEMORY_TYPE.Siemens_DB, TABLE, 3043, 1);
-        internal static MEMORY_CELL M154_SWITCH_ONOFF = new MEMORY_CELL(MEMORY_TYPE.Siemens_DB, 0, 2);
+        internal static MEMORY_CELL M154_SWITCH_ONOFF = new MEMORY_CELL(MEMORY_TYPE.Siemens_DB, TABLE, 0, 2);
 
         internal static MEMORY_CELL AXES_BUTTON_VISIBLE = new MEMORY_CELL(MEMORY_TYPE.Siemens_DB, TABLE, 3044, 16);