Rockwell Automation AutoMax Enhanced Ladder Language Reference Manual - Manual (Page 18)

1Ć2
1.1 Normally Open Contact (NOI)
Use this input instruction to examine whether a Boolean variable is on (1) or off (0).
When the variable is on, the instruction is true. Otherwise, the instruction is false.
The supported variables are:
D simple Boolean
D Boolean array element
D bitĆindexed integer or double integer
D bitĆindexed integer or double integer array element
D timer/counter status bits
Example of a Normally Open Contact (NOI)
This rung shows that when the variable
valve.open is true, the variable tank_fill is set
true.