UM353-1B Function Blocks
April 2012
3-87
3.2.83 SIN_ - SINE
SIN__ function blocks accept a radian input and output the sine
of that angle.
3.2.84 SPLIM - Setpoint Limit
SPLIM function blocks can be used on a one per loop
basis to limit the setpoint of the loop controller. Input A
will pass through the function block to output O1 unless it
equals or exceeds the High limit setting or exceeds the
Low limit setting at which time the block will output the
limit value.
If the HI LIMIT is set lower than the LO LIMIT, the block
will always output the high limit value.
Output status HS or LS will be high (1) if the block is in a
limit condition. The status event ‘S HI LIM’ or ‘S LO
LIM’ will be displayed in the alphanumeric if the SL
PRIOR is greater than 0. A priority of 0 disables the
reporting of the limit function and sets the bits in the status
word to 0. See the table on the next page for additional
details regarding priorities.
The SPLIM function block has an RG PTR parameter (input R) that defines the normal operating range of the
block. Limit settings can be made within -10% to 110% of the range pointer values. If the range pointer is not
configured, a range of 0.0 to 100.0 will be used. If a range change is made the current limit value will be moved to
be the same % value within the new range.
Input
X
SINE
O1
O
utput
1
O
1
= SIN (X)
SIN
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
BLOCK DIAGRAM
O1X
Input
X
O
utput
1
.
.
SIN (X)
Input
A
SETPOINT LIMIT
TI
H
I
O
L
P
I
N
U
A
O
L
R
R
HI
gh
LIMIT
(S)
........................... Real (100.00)
LO
w
LIMIT
(S)
........................... Real (0.00)
INPUT A
(H)
.....
loop tag.block tag.output (null)
S
etpt
L
imit
PRIOR
ity
(S)
.. 0,1,2,3,4,5 (0)
HS
H
igh
S
tatus
SETPOINT LIMIT
SPLIM
ESN =
000
I
M
L
T
P
S
I
A
L
I
M
I
T
ESN
E
xec.
S
eq.
N
o.
(H)
........... 001 to 250
O1
O
utput
1
L
ow
S
tatus
LS
RG PTR
R
an
G
e
P
oin
T
e
R
(H)
..
loop tag.block tag (null)
R
ange
R
BLOCK DIAGRAM
HI SELECTOR
LO SELECTOR
HI LIMIT
A
O1
LO LIMIT
HS
LS
O
utput
1
H
igh limit
S
tatus
L
ow limit
S
tatus
.
.
.
To Next Page
Loading...
