If X exceeds the value of MX_HIGH, the function block reports this status with MX_IND = 1.

If X falls below the value of MX_LOW, the function block reports this status with MX_IND = 0.

Formulas:

MX_INDi = 1, if X > MX_HIGH

MX_INDi = 0, if X < MX_LOW

otherwise

MX_INDi = MX_IND(i-1)

If MX_LOW is greater than MX_HIGH, no hysterisis is created and the function block reports this state with MX_IND = 1.

If X falls below the value of MN_HIGH, the function block reports this status with MN_IND = 1.

If X exceeds the value of MN_LOW, the function block reports this status with MN_IND = 0.

Formulas:

MN_INDi = 1, if X < MN_HIGH

MN_INDi = 0, if X > MN_LOW

otherwise

MN_INDi = MN_IND(i-1)

If MN_HIGH is greater than MN_LOW, no hysterisis is created and the function block reports this state with MN_IND = 1.