Yokogawa EJX930A - Manual (Page 99)

<Appendix 3. Input Selector (IS) Block>
A3-4
IM 01C25T02-01E
A3.2.2 MIN_GOOD Handling
If there is no selectable input or if the number of selectable inputs is less than the value of MIN_GOOD,
SELECTED becomes “0.”
A case where the number of valid INs is less than the value of MIN_GOOD:
FA0302.ai
OUT = certain retained
value that was
output previously
IN_1 = 23
SELECT_TYPE = Middle
STATUS_OPTS
MIN_GOOD = 3
SELECTION
SELECTED = 0
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 = ON
DISABLE_5 = OFF
DISABLE_6 = ON
DISABLE_7 = ON
DISABLE_8 = ON
OP_SELECT = 1
Figure A3.2 Example (1)
This example restricts the valid inputs using DISABLE_n, and the inputs are enabled only at DISABLE_3 and
DISABLE_5. Because the effective number of MIN_Good is 3, the input specified by OP_SELECT will not be
output.