Mapping of the datatypes

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All variables in zenon are derived from IEC data types. The following table compares the IEC datatypes with the datatypes of the PLC.

Example for all possible zenon data types

PLC	zenon
(M)BOOL	BOOL
(MB)BYTE/CHAR	USINT/SINT
(MW)WORD/INT	UINT/INT
(D)BOOL	BOOL
(DL/DR)BYTE/CHAR	USINT/SINT
(DW)WORD/INT	UINT/INT
(DD)DWORD/DINT	UDINT/DINT
STRING	STRING
(I)BOOL	BOOL
(IB)BYTE/CHAR	USINT/SINT
(IW)WORD/INT	UINT/INT
(Q)BOOL	BOOL
(QB)BYTE/CHAR	USINT/SINT
(QW)WORD/INT	UINT/INT
COUNTER (C)WORD	UINT/INT
STATUS WORD	UINT/INT
TIME (T)REAL	REAL

Data type

The property "Datenart" is the internal numerical name of the data type. It is also used for the extended DBF import/export of the variables.