Hysteresis_DINT (FB)

FUNCTION_BLOCK Hysteresis_DINT

This function block will set the output variable to TRUE, if the integral value \(x \in \mathbb{Z}\) is smaller than an integral lower bound \(x_{u} \in \mathbb{Z}\)
It will set the Boolean output variable to FALSE, if the input value \(x\) exceeds the integral upper bound \(x_{o} \in \mathbb{Z}\).
If \(x\) lies between the lower and upper bound, the value of the output will rest unchanged by the module.
InOut:

Scope

Name

Type

Comment

Input

diValue

DINT

input value \(x \in \mathbb{Z}\)

diLimitPos

DINT

upper bound \(x_{o} \in \mathbb{Z}\)

diLimitNeg

DINT

lower bound \(x_{u} \in \mathbb{Z}\)

Output

xOut

BOOL

FALSE: If \(x > x_{o} \land x_{u} < x_{o}\)
TRUE: If \(x < x_{u} \land x_{u} < x_{o}\)
xOut” else