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Detailed Setup—OS Function Block
July 2013
blocks may effect the useful range of a line. Units of percent are used in the examples because the common
application of this block is to valves, but any units may be used to suit the application.
Figure 4‐19. Split Range and Sequence Operation
Y
100%
(X
11
0%
(X
, Y
12
0%
The following parameters as paired coordinates are used to specify the output splitter operation:
X
, Y
, X
, Y
11
11
12
12
X
, Y
, X
, Y
21
21
22
22
Where X
is the value of SP associated with OUT_n and X
nJ
curve respectively. Y
is the value of OUT_n and Y
nJ
respectively.
By specifying the coordinates as shown in tables 4‐45 and 4‐46, the endpoints of the lines are defined. The contents of
the respective X's are held in the IN_ARRAY parameter and the contents of the respective Y's are held in the
OUT_ARRAY parameter. If a set of points are specified such that a region of the input range is not specified, then the
corresponding OUT_n will be set to the closest endpoint of the input value, either high or low, when the specified
region is exceeded.
Table 4‐45. IN_ARRAY Coordinates
Index
Coordinate
X
- Start value of SP for the OUT_1 line.
11
0
(X
< X
)
11
12
X
- End value of SP for the OUT_1 line.
12
1
(X
< X
)
11
12
X
- Start value of SP for the OUT_2 line.
21
2
(X
< X
)
21
22
X
- End value of SP for the OUT_2 line.
22
3
(X
< X
)
21
22
A configuration error is set in BLOCK_ERR and the actual mode of the block goes to Out of Service if the X values have
any of the following conditions: X
Refer to figure 4‐20 for an example of LOCKVAL = true, and figure 4‐21 for an example of LOCKVAL = false. The
parameter LOCKVAL provides an option to specify whether OUT_1 remains at its ending level when control is switched
164
Split Range
(X22 , Y22)
, Y
)
11
OUT_1
OUT_2
(X
, Y
)
)
21
21
12
50%
100%
SP
< X
, X
< = X
21
11
12
Y
100%
OUT_1
0%
(X
, Y
11
X
0%
and X
refer to the 1st and 2nd coordinates of the nth
n1
n2
and Y
refer to the 1st and 2nd coordinates of the nth curve
n1
n2
Table 4‐46. OUT_ARRAY Coordinates
Index
0
1
2
3
, X
< = X
.
11
22
21
Instruction Manual
Sequencing
(X
, Y
)
(X
12
12
22
OUT_2
(X
, Y
)
)
21
21
11
50%
100%
SP
Coordinate
Y
- Value of OUT_1 at X
11
11
Y
- Value of OUT_1 at X
12
12
Y
- Value of OUT_2 at X
21
21
Y
- Value of OUT_2 at X
22
22
D103412X012
, Y
)
22
X
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