Siemens B4 manual Type and, Size, Format-Options, Range and number notation, Example, description

Automation– and Drive Technology- SCE

Data in a data block must be determined through data types.

The following standard- data types are defined in the S7 below :

Type and	Size	Format-Options	Range and number notation	Example
description	in Bits		(lowest to highest values)
BOOL (Bit)	1	Boolean text	TRUE/FALSE	TRUE
BYTE (Byte)	8	Hexadecimal	B#16#0 to B#16#FF	B#16#10
		number
WORD (Word)	16	Binary number	2#0 to 2#1111_1111_1111_1111	2#0001_0000_0000_0000
		Hexadecimal	W#16#0 to W#16#FFFF	W#16#1000
		number
		BCD	C#0 to C#999	C#998
		Decimal number	B#(0,0) to B#(255,255)	B#(10,20)
		unsigned
DWORD (Double	32	Binary number	2#0 to	2#1000_0001_0001_1000_1
word)			2#1111_1111_1111_1111_1111_1111	011_1011_0111_1111
			_1111_1111
		Hexadecimal	DW#16#0000_0000 to	DW#16#00A2_1234
		number	DW#16#FFFF_FFFF
		Decimal number	B#(0,0,0,0) to B#(255,255,255,255)	B#(1,14,100,120)
		unsigned
INT (Integer)	16	Decimal number	-32768 to 32767	1
		signed
DINT (Int,32 bit)	32	Decimal number	L#-2147483648 to L#2147483647	L#1
		signed
REAL (Floating-	32	IEEE floating-point	Upper limit: +/-3.402823e+38	1.234567e+13
point number)		number	Lower limit: +/-1.175495e-38
S5TIME	16	S7-Time in steps of	S5T#0H_0M_0S_10MS to	S5T#0H_1M_0S_0MS
(Simatic-Time)		10 ms	S5T#2H_46M_30S_0MS and	S5TIME#1H_1M_0S_0MS
			S5T#0H_0M_0S_0MS
TIME	32	IEC-Time in steps	-T#24D_20H_31M_23S_648MS to	T#0D_1H_1M_0S_0MS
(IEC-Date)		from 1ms, integer	T#24D_20H_31M_23S_647MS	TIME#0D_1H_1M_0S_0MS
		signed
DATE	16	IEC-Date in steps	D#1990-1-1 to D#2168-12-31	DATE#1994-3-15
(IEC-Date)		of 1 day
TIME_OF_DAY	32	Time in steps of	TOD#0:0:0.0 to TOD#23:59:59.999	TIME_OF_DAY#1:10:3.3
(Time)		1ms
CHAR (Character)	8	ASCII-Characters	´A´, ´B´ etc.	´B´

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T I A Training document	Page 14 of 18		Module B4
Last revision: 02/2002			Data blocks