PLC Data Types

✔ What are the 5 Main Data Types Use in PLC?

1. Bool
2. Integer
3. Real
4. String
5. Character

PLC Data Types Table :

Data Type	Size in Bits	Format	Data Types Example/ Range
BOOL (Bit)	1	Boolean	TRUE/FALSE
BYTE (Byte)	8	Hexadecimal number	B#16#0 to B#16#FF
WORD (Word)	16	Binary number	2#0 to 2#1111_1111_1111_1111
		Hexadecimal number	W#16#0 to W#16#FFFF
		BCD	C#0 to C#999
		Decimal number unsigned	B#(0,0) to B#(255,255)
DWORD (Double word)	32	Binary number	2#0 to 2#1111_1111_1111_1111_1111_1111_1111_1111
		Hexadecimal number	W#16#0000_0000 to W#16#FFFF_FFFF
		Decimal number unsigned	B#(0,0,0,0) to B#(255,255,255,255)
INT (Integer)	16	Decimal number signed	-32768 to 32767
DINT (Double integer)	32	Decimal number signed	L#-2147483648 to L#2147483647
REAL (Floating-point number)	32	IEEE Floating-point number	Upper limit +/-3.402823e+38     Lower limit +/-1.175495e-38
CHAR (Character)	8	ASCII characters	A', 'B' etc.