Siemens 353 - Exp - Natural Exponentiation; Ext - Exponentiation

Function Blocks UM353-1B
April 2012
3-44
3.2.39 EXP_ - NATURAL EXPONENTIATION
EXP_ function blocks perform the natural exponentiation function,
base “e”. The output will be the value “e” raised to the power of
input X.
3.2.40 EXT_ - EXPONENTIATION
EXT_ function blocks 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