Siemens 500 NIM - Manual (Page 128)

Floating Point Numbers B-6 SIMATIC TIWAY I Series 500 NIM User Manual
IEEE Format (continued)
EXAMPLES:
Base 10 Number
Hexadecimal Contents
of Memory Word
1.0
0.5
-0.5
0.03125
100.0
3F80
3F00
BF00
3D00
42C8
0000
0000
0000
0000
0000
1st
Word
2nd
Word
Mantissa
Sign Bit
Exponent
(8 bits)
Most Significant
(7 bits)
Least Significant 16 bits of number
S
MSB LSB
Figure B-2 IEEE Floating Point Representation