Fisher FIELDVUE DVC6200f Instruction Manual page 151

Instruction Manual
D103412X012
Figure 4‐15. Input Selector Block Substatus Propagation
START
MODE_BLK
OOS?
No
MODE_BLK
MAN?
No
MODE_BLK must
be Auto
1
OP_SELECT
status?
Good
OP_SELECT
value >0?
No
At least 1 good
input?
Yes
SELECT_TYPE
Middle or
Average?
No
SELECT_TYPE
Maximum or
Minimum?
No
SELECT_TYPE Must
be First Good or
Hot Spare?
No
Illegal Select Type
should never be reached
Yes
Yes
Bad
1
Good
Yes
Selected in­
put status?
Bad
No
Yes
Yes
One input?
Multiple
Inputs
Yes
Yes
One input?
Multiple
Inputs
All inputs with
same value?
Yes
Propagate input
substatus as is
NOTES:
AN INPUT STATUS MAY BE BAD, GOOD, OR UNCERTAIN. IF BAD, THE INPUT IS NOT USED AND THE STATUS IS PROPAGATED
1
AS BAD WITH SUBSTATUS NON‐SPECIFIC. IF GOOD IT IS USED AND THE STATUS IS PROPAGATED AS GOOD
(NON‐CASCADE). IF UNCERTAIN, AND STATUS_OPTS IS "USE UNCERTAIN AS GOOD" THEN THE INPUT IS USED AND THE
STATUS IS PROPAGATED AS GOOD (NON‐CASCADE), OTHERWISE IT IS NOT USED AND THE STATUS IS PROPAGATED AS
BAD WITH SUBSTATUS NON‐SPECIFIC.
STATUS_OPTS Un­
Yes
certain if Man
Mode?
No
Propagate
Nonspecific
Yes
No
Detailed Setup—ISEL Function Block
Propagate Bad,
Out of Service
Propagate
Uncertain
Propagate Good
Noncascade
Propagate Bad,
Nonspecific
Propagate Good
Noncascade
Propagate Bad,
Nonspecific
Propagate input
substatus as is
Propagate
Nonspecific
July 2013
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