Step 7 Elementary Data Types

Type and
Description 		Size
in
Bits 		Format Options Range and Number Notation
(lowest to highest values) 		Example in STL
BOOL (Bit) 1 Boolean text  TRUE/FALSE  TRUE
BYTE (Byte) 8 Hexadecimal number B#16#0 to B#16#FF  L B#16#10
L byte#16#10
WORD (Word) 16 Binary number 2#0 to 2#1111_1111_1111_1111 L 2#0001_0000_0000_0000
Hexadecimal number W#16#0 to W#16#FFFF L W#16#1000
L word#16#1000
BCD C#0 to C#999 L C#998
Decimal number unsigned B#(0,0) to B#(255,255) L B#(10,20)
L byte#(10,20)
DWORD (Double word) 32 Binary number 2#0 to 2#1111_1111_1111_1111_
1111_1111_1111_1111

L 2#1000_0001_0001_1000_
1011_1011_0111_1111
Hexadecimal number W#16#0000_0000 to W#16#FFFF_FFFF L DW#16#00A2_1234
L dword#16#00A2_1234
Decimal number unsigned B#(0,0,0,0) to B#(255,255,255,255) L B#(1, 14, 100, 120)
L byte#(1,14,100,120)
INT (Integer) 16 Decimal number signed -32768 to 32767 L 101
DINT (Double integer) 32 Decimal number signed L#-2147483648 to L#2147483647 L L#101
REAL (Floating-point number) 32 IEEE Floating-point number Upper limit +/-3.402823e+38
Lower limit +/-1.175495e-38 		L 1.234567e+13
S5TIME (SIMATIC time) 16 S7 time in steps of 10ms (default) S5T#0H_0M_0S_10MS to
S5T#2H_46M_30S_0MS and
S5T#0H_0M_0S_0MS 		L S5T#0H_1M_0S_0MS
L S5TIME#0H_1H_1M_0S_0MS
TIME (IEC time) 32 IEC time in steps of 1 ms, integer signed T#24D_20H_31M_23S_648MS
to
T#24D_20H_31M_23S_647MS 		L T#0D_1H_1M_0S_0MS
L TIME#0D_1H_1M_0S_0MS
DATE (IEC date) 16 IEC date in steps of 1 day D#1990-1-1 to
D#2168-12-31 		L D#1996-3-15
L DATE#1996-3-15
TIME _OF_DAY (Time) 32 Time in steps of 1 ms TOD#0:0:0.0 to
TOD#23:59:59.999 		L TOD#1:10:3.3
L TIME_OF_DAY#1:10:3.3
CHAR (Character) 8 ASCII characters A', 'B' etc. L 'E'

 


S5TIME NOTES

S5TIME Format

S5TIME Format

 

Time base Binary Code
10 ms 00
100 ms 01
1 s 10
10 s 11