Less Than (LES) Instruction in Ladder Logic

The Less Than (LES) instruction in ladder logics is used to test whether one value (source A) is less than another (source B)

If source A is less than the value at source B, the instruction is logically true.

Less Than (LES) Instruction


Source A must be an address.

Source B can be either a program constant or an address.

Values are stored in two’s complementary form.