Yokogawa EJX930A - Manual (Page 101)

<Appendix 3. Input Selector (IS) Block>
A3-6
IM 01C25T02-01E
A3.3.2 SELECTION Handling
If the value of OP_SELECT is “0,” input selection using SELECT_TYPE is enabled.
When SELECT TYPE is “first good”
The IS block selects the input with the smallest input number among valid inputs and transmits the value of that
input to OUT. The number of the selected input is transmitted to SELECTED.
IN_1 = 23
SELECT_TYPE = First Good
STATUS_OPTS
MIN_GOOD = 1
SELECTION
SELECTED = 2
OUT = 34.5
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 = OFF
DISABLE_3 = OFF
DISABLE_4 = OFF
DISABLE_5 = OFF
DISABLE_6 = OFF
DISABLE_7 = OFF
DISABLE_8 = OFF
OP_SELECT = 0
FA0304.ai
Figure A3.4 Example (3)
Because DISABLE_1 is ON, IN_1 is disabled, and IN_2 is selected for output. If DISABLE_1 is turned OFF,
the output changes from IN_2 to IN_1. That is, the valid IN with the smaller input number is always selected for
output.