Data Type

Data type	Size	Sign	Value range	Precision
BOOL	1 bit	-	0 or 1	-
BYTE	8 bits (1 byte)	-	0 to 255	-
USINT	8 bits (1 byte)	-	0 to 255	-
SINT	8 bits (1 byte)	Yes	-128 to 127	-
WORD	16 bits (2 bytes)	-	0 to 65535	-
UINT	16 bits (2 bytes)	-	0 to 65535	-
INT	16 bits (2 bytes)	Yes	-32768 to 32767	-
DWORD	32 bits (4 bytes)	-	0 to (2^32 - 1)	-
UDINT	32 bits (4 bytes)	-	0 to (2^32 - 1)	-
DINT	32 bits (4 bytes)	Yes	-2^31 to (2^31 - 1)	-
LWORD	64 bits (8 bytes)	-	0 to (2^64 - 1)	-
ULINT	64 bits (8 bytes)	-	0 to (2^64 - 1)	-
LINT	64 bits (8 bytes)	Yes	-2^63 to (2^63 - 1)	-
REAL	32 bits (4 bytes) - IEEE 559 standard floating point	Yes	±10^38	1/2^23
LREAL	64 bits (8 bytes) - IEEE 559 standard floating point	Yes	±10^308	1/2^52
STRING	8 bits (1 byte) per position + 8 bits (1 byte) for the terminating null character	-	1 to 254 ASCII characters	-

NOTE 1: Consider only the number of characters when setting the variable size. The byte occupied by the null terminator is not added to the size. If the STRING size is not defined by the user, 128 characters will be allocated by default.

NOTE 2: Data types valid only for SCA06.