Technical data

11
907 KP 95 / Issued: 09.97
CEs
DOUBLE WORD TO REAL CONVERSION DWREAL
FBD/LD
DWREAL
DW REAL
MD 00,02 MD 04,00
DWREAL
DW REAL
IL
!BA
DWREAL
0
MD 00,02
MD 04,00
Parameter
E1 DOUBLE WORD KD, MD double word to be converted
A1 DOUBLE WORD MD result of the conversion, double word
____________________________________________________________________________________________
Description
The value of the double word operand E1 is converted
into a real value (IEEE 754). The result is allocated to the
double word operand at the output A1. This function mo-
dule is appropriate in conjunction with the function mo-
dule DSPOUT only. With that it is possible to transmit real
values via the Advant Fieldbus 100.
E1 DOUBLE WORD
The value of the double word operand at E1 input is con-
verted into a real value (IEEE 754). The result is available
as value of the output operand A1.
A1 DOUBLE WORD
The real value (IEEE 754) of E1 is available at output A1.
The inputs and outputs can neither be doubled nor in-
verted.
Data formats in accordance with IEEE754
S
ef
e
255
255
1...254
0
0
f represented value
!0 Not a Number, NaN
0(–1)
s
*
infinite
(–1)
s
*
2
e–127
*
(1.f)
!0 (–1)
s
*
2
–126
*
(0.f)
0(–1)
s
*
0, zero
s: sign (1 bit)
e: biased exponent (8 bits)
f: significant (23 bits)
31 30 23 22 0
____________________________________________________________________________________________
CE Data
Run time: 07 KR 91 / 07 KT 92 / 07 KT 93
Basic run time: 27 to 65 µs
Additional run time: –
Output updating: yes
Number of historical values: 0 words
Available as of: ABB Procontic CS31 07 KR 91 R202/R252 index b
07 KT 92 R202/R262
07 KT 93 R101 index d
07 KT 93 R171 index c