Siemens Moore 353 - Exp_ - Natural Exponentiation; Ext_ - Exponentiation

UM353-1 Function Blocks
March 2003
3-55
3.2.49 EXP_ - NATURAL EXPONENTIATION
EXP_ function blocks, in firmware 1.30 and higher, perform the
natural exponentiation function, base “e”. The output will be the
value “e” raised to the power of input X.
3.2.50 EXT_ - EXPONENTIATION
EXT_ function blocks, in firmware 1.30 and higher, will provide
an output that equals the Y input raised to the power of X input.
All negative values of input Y will be treated as 0.0. When input
Y is 0.0 and X is negative, the output will be set to the maximum
number (i.e. 1.17...e38).
Input
X
NATURAL EXPONENTIATION
O1
O
utput
1
O
1
= e
EXP
ESN =
000
X
E
E
xec.
S
eq.
N
o. ..................... 000 to 250 (000)
X
T
U
P
N
I
INPUT X
..............
loop tag.block tag.output
(
null
)
SN
X
BLOCK DIAGRAM
O1X
Input
X
O
utput
1
.
.
e
X
Input
X
EXPONENTIATION
O1
O
utput
1
O
1
= Y
EXT
ESN =
000
X
E
E
xec.
S
eq.
N
o. ..................... 000 to 250 (000)
Y
T
U
P
N
I
INPUT Y
..............
loop tag.block tag.output
(
null
)
Input
Y
Y
X
T
U
P
N
I
SN
INPUT X
..............
loop tag.block tag.output
(
null
)
X
BLOCK DIAGRAM
O1
X
Y
Input X
Input Y
O
utput
1
.
.
Y
X
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