Siemens Moore 353 User Manual

Function Blocks UM353-1
March 2003
3-60
3.2.59 MTH_ - Math
MTH_ function blocks provide universal arithmetic
capability. As shown in the block diagram, each input has
gain and bias scaling. The resulting signals are then applied
to configurable math operations (DIV, MUL, ADD and
SUB). Operation A will be performed first on inputs A and
B. Operation B will be performed next on the resultant and
input C.
Unused inputs to a MUL or DIV operation will be set to 1.0
and those to an ADD or SUB operation will be set equal to
0.0. The operation of those inputs will function normally
so it is important to insure that the bias and gain settings are
set properly.
In a DIV operation, when a divisor is 0.0 the output will go
to the maximum Real number with the sign determined by
the numerator. If the numerator is 0 the output will be 0.
O1
A
C
BLOCK DIAGRAM
O
utput
1
IN
put
A
MATH
BIAS
IN
put
B
GAIN
IN
put
C
GAIN
+
+
+
IN
put
A
GAIN
IN
put
B
BIAS
IN
put
C
BIAS
OP
eration
A
Add, Sub, Mul, Div
OP
eration
B
Add, Sub, Mul, Div
OUT
put
GAIN
+
OUT
put
BIAS
B
I
nput
C
I
nput
B
I
nput
A
+
+
++
+
.
.
Input
A
MATH
N
OUT
put
GAIN
(S)
....................................... Real
(1.0)
O1
O
utput
1
ADD, SUB, MUL, DIV
MTH_
ESN =
000
I
A
A
B
C
MATH
Input
B
Input
C
INPUT C
(H)
......................
loop tag.block tag.output
(null)
E
xec.
S
eq.
N
o.
(H)
............................ 001 to 250
I
I
I
N
N
N
P
P
P
U
U
U
T
T
T
A
B
S
E
N
INPUT B
(H)
......................
loop tag.block tag.output
(null)
INPUT A
(H)
......................
loop tag.block tag.output
(null)
OP
eration
A
(S)
...................... Add,Sub,Mul,Div
(Add)
C
GTUO
NI
A
GANI
N
I
A
GBNI
N
I
A
GCNI
S
I
A
BTUO
ANI
BNI
CNI
SI
A
B
SI
A
B
SI
A
B
AO
P
BO
P
IN
put
C GAIN
(S)
....................................... Real
(1.0)
IN
put
B GAIN
(S)
....................................... Real
(1.0)
IN
put
A GAIN
(S)
....................................... Real
(1.0)
OUT
put
BIAS
(S)
....................................... Real
(0.0)
IN
put
C BIAS
(S)
....................................... Real
(0.0)
IN
put
B BIAS
(S)
....................................... Real
(0.0)
IN
put
A BIAS
(S)
....................................... Real
(0.0)
OP
eration
B
(S)
...................... Add,Sub,Mul,Div
(Add)
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Siemens Moore 353 Specifications

General

Brand	Siemens
Model	Moore 353
Category	Controller
Language	English