Supported data types in C#

The following table illustrates how the IEC 61131-3 data types are linked to the .Net framework and to C#, respectively.

Note: Variables of data types that are marked with a “+” in the Attribute column must have the (otherwise optional) attribute DataType for unambiguous assignment.

IEC 61131-3 data type .Net framework data type C# data type Attribute
BOOL System.Boolean bool –
SINT System.SByte sbyte –
INT System.Int16 short –
DINT System.Int32 int –
LINT System.Int64 long –
USINT System.Byte byte –
UINT System.UInt16 ushort –
UDINT System.UInt32 uint –
ULINT System.UInt64 ulong –
REAL System.Single float –
LREAL System.Double double –
TIME System.Int32 int +
LTIME System.Int64 long +
LDATE System.Int64 long +
LTIME_OF_DAY System.Int64 long +
LDATE_AND_TIME System.Int64 long +
BYTE System.Byte byte +
WORD System.UInt16 ushort +
DWORD System.UInt32 uint +
LWORD System.UInt64 ulong +
STRING System.Iec61131Lib.IecStringEx – –
WSTRING (from 2021.6) System.Iec61131Lib.IecWString (from 2021.6) – –
ANY System.Iec61131Lib.Any – +
ANY_MAGNITUDE System.Iec61131Lib.Any – +
ANY_NUM System.Iec61131Lib.Any – +
ANY_INT System.Iec61131Lib.Any – +
ANY_SIGNED System.Iec61131Lib.Any – +
ANY_UNSIGNED System.Iec61131Lib.Any – +
ANY_REAL System.Iec61131Lib.Any – +
ANY_BIT System.Iec61131Lib.Any – +
ANY_ELEMENTARY System.Iec61131Lib.Any – +
ANY_STRING System.Iec61131Lib.Any – +

 

See also

  1. C# in PLCnext Technology
  2. Supported functions of the C# programming system
  3. eCLR Programming System
  4. Required installations
  5. Creating a C# firmware library
  6. Remote debugging of C# code
  7. Help Files

 

 

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• Published/reviewed: 2023-06-16 • Revision 057 •