Less than (LT) symbol
Also called LES, LT compare, Less than comparison
Compares IN1 and IN2 and passes power when IN1 < IN2 (less than). Allen-Bradley calls it LES.
IEC 61131-3What the less than (LT) symbol means
Compares IN1 and IN2 and passes power when IN1 < IN2 (less than). Allen-Bradley calls it LES.
How it is drawn
Where you see it
Acting on values: a level above a set point, a count reached, a recipe step selected.
Related symbols
Frequently asked questions
What does the less than (LT) symbol look like?
A box marked LT with inputs IN1 and IN2.
Where is a less than (LT) used?
Acting on values: a level above a set point, a count reached, a recipe step selected.
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