Siemens Moore 353, Руководство пользователя

Страница: 86 / 306

Function Blocks UM353-1
March 2003 3-56
3.2.51 FTG_ - Falling Edge Trigger
FTG_ function blocks provide a high (1) output for one
scan cycle each time input P transitions from a high (1)
input to a low (0) input.
3.2.52 GB_ - Gain & Bias
GB_ function blocks provide action, gain, and bias
adjustments to input signal A. Although this block can
provide signal scaling, it should not be used if needed as a
reference for a range pointer. The SCL function block
should be used when scaling is required for this purpose.
BLOCK DIAGRAM
A
O utput 1
+/- 1
O1
Input A
+ +
+
GAIN
DIR
ect
ACT
ing ?
IN put A
GAIN
OUT put
BIAS
OUT put
BIAS
IN put A
O1 = G
O
(+/-AG
I
+ B
I
) + B
O
+
.
.
3.2.53 HLD_ - Hold
HLD_ function blocks provide an output equal to the
HOLD VAL set in configuration for interconnection to
other function blocks.
P
ulse Input
FALLING EDGE TRIGGER
O1 O utput 1
FALLING EDGE
FTG_ ESN = 000
P
E S N
E xec. S eq. N o.
(H)
................ 001 to 250
P T U P N I
INPUT P
(H)
..........
loop tag.block tag.output ( null )
TRIGGER
BLOCK DIAGRAM
O utput 1
P
O1
Pulse Input
.
.
Input A
GAIN & BIAS
N G
I N U A
OUT
put
GAIN
(S)
....................... Real (1.0)
IN put A BIAS
(S)
....................... Real (0.0)
INPUT A
(H)
.....
loop tag.block tag.output (null)
O1 O utput 1
GAIN & BIAS
GB_ ESN = 000
I A
T P
A
B A I S
E S N
E xec. S eq. N o.
(H)
............ 001 to 250
I R A C
IN put A GAIN
(S)
....................... Real (1.0)
N G I A
B A
I
S
OUT put BIAS
(S)
....................... Real (0.0)
I
I
N
N
A
A
O
O
U
U
T
T
D T
DIR ect ACT ing
(S)
............... NO/YES (YES)
HOLD
O1
O utput 1
HOLD
HLD_ ESN = 000
L L O
HOLD VAL ue
(S)
........................... Real (null)
A V
H
D
BLOCK DIAGRAM
O utput 1
HOLD VAL ue
O1
.
StockCheck.com