Yokogawa FVX110 - Manual (Page 116)

<Appendix 3. Input Selector (IS) Block>
A3-9
IM 01S01C01-01EN
When SELECT TYPE is “Middle”
If there is more than one valid input and the number of such input is an odd number, the value of the middle
input will be transmitted to OUT. If there is an even number of valid inputs, the average of the middle two inputs
is transmitted to OUT. If the average is used for OUT, the block transmits “0” to SELECTED, while it transmits
the number of the input used for the middle for other cases. If the number of valid inputs is 1, it is irrelevant to
selection by “Middle” selector action. The following shows an example of selection by “Middle” selector action.
If there is an even number of valid inputs:
IN_1 = 23
SELECT_TYPE = Middle
STATUS_OPTS
MIN_GOOD = 1
SELECTION
SELECTED = 0
OUT = 19.55
(IN_5+IN_6)/2 = 19.55
IN_2 = 34.5
IN_3 = 45
IN_4 = 2.34
IN_5 = 23.6
IN_6 = 15.5
IN_7 = 32.5
IN_8 = 27.4
DISABLE_1 = ON
DISABLE_2 = ON
DISABLE_3 = OFF
DISABLE_4 = OFF
DISABLE_5 = OFF
DISABLE_6 = OFF
DISABLE_7 = ON
DISABLE_8 = ON
OP_SELECT = 0
FA0307.ai
Figure A3.7 Example (6)
Because DISABLE_1, DISABLE_2, DISABLE_7, and DISABLE_8 are ON, the corresponding IN_1, IN_2,
IN_7, and IN_8 are disabled and the remaining four INs are enabled. Furthermore, because IN_3 has the
maximum value and IN_4 has the minimum value among the valid INs, they are not selected and the average
of IN_5 and IN_6 inputs is output. When the average is selected for OUT, SELECTED is set to “0.”