Siemens Moore 353 User Manual

UM353-1 Function Blocks
March 2003
3-101
3.2.99 TH_ - Track & Hold
TH_ function blocks can hold an initial value that will
transfer to the block output O1 on power up and it can be
used to track the TV input when input TC is high (1).
In 1.30 firmware or greater, the HOLD value can be
changed on line, using the pulser, when the TH_.O1 block
output is directly connected to X or Y inputs in an ODC
block. The range and resolution used by the pulser making
on line changes will be determined by the X Range or Y
Range inputs.
BLOCK DIAGRAM
TV
O1
O
utput
1
TC
HOLD value
T
rack
C
ommand
T
rack
V
ariable
INIT
ia l
VA L
ue
X0 31 34S0
3.2.100 TOT_ - Totalizer (V2.3)
TOT_ function blocks accept a Boolean input and they
will retain a running total of the input transitions as the
block output as a real value for interconnection to other
blocks in the controller. The running total can be reset
when input R goes high (1). Input R is executed prior to
reading input S on each scan cycle.
Unconfigured inputs will be set to 0. When the
EDGETRIG parameter is set to 1, the total will
increment on each 0 to 1 transition on input S. When
the EDGETRIG parameter is set to 0, the total will
increment on each 1 to 0 transition.
The total will be retained during a WARM & HOT start
and will be initialized to 0.0 on a COLD start.
Input S
TOT
O1
O
utput
1
TOT
TOT_
ESN =
000
S
ESN
E
xec.
S
eq.
N
o.
(H)
................ 001 to 250
R
TU
P
N
I
INPUT S
(H)
..........
loop tag.block tag.output (null)
Input R
R
S
TU
P
N
I
INPUT R
(H)
..........
loop tag.block tag.output (null)
GDETRGIE
EDGE TRIG
GER
(H)
......... 0-NO/1-YES 1
BLOCK DIAGRAM
S
O1
R
Totalizer
Total
Reset
Input Signal
T
rack
V
ariable
TRACK & HOLD
INIT
ial
VAL
ue
(S)
........................... Real (0.0)
O1
O
utput
1
TRACK & HOLD
TH_
ESN =
000
TV
ESN
E
xec.
S
eq.
N
o.
(H)
................ 001 to 250
L
T
TU
P
N
I
INPUT TV
(H)
.......
loop tag.block tag.output (null)
T
rack
C
ommand
TC
T
TU
P
N
I
INPUT TC
(H)
.......
loop tag.block tag.output (null)
AV
T
I
N
I
V
C
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Siemens Moore 353 Specifications

General

Brand	Siemens
Model	Moore 353
Category	Controller
Language	English