Detect Fall Nonpositive
Detection of a falling edge provided that the signal value decreases to a non-positive value and its previous value was strictly positive.
Description
The Detect Fall Nonpositive block determines that the current value of the input signal is less than or equal to zero and its previous value was greater than zero.
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The output signal takes the value
true (1)when the input signal value is less than or equal to zero and its previous value was greater than zero. -
The output signal takes the value
false (0)when the value of the input signal is greater than zero, or when it is non-positive and its previous value was also non-positive.
This block can only be used with discrete solvers.
Ports
Input
Port_1 - input signal
scalar | vector | matrix
Input signal as a scalar, vector or matrix.
Data types: Float16, Float32, Float64, Int8, Int16, Int32, Int64, UInt8, UInt16, UInt32, UInt64, Bool.
Output
Port_1 - output signal
scalar | vector | matrix
An output signal that detects a falling edge. The output can be a scalar, vector or matrix.
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The output signal takes the value
true (1)when the value of the input signal is less than or equal to zero and its previous value was greater than zero. -
The output signal takes the value
false (0)when the value of the input signal is greater than zero, or when it is non-positive and its previous value was also non-positive.
Data types: Bool, UInt8.
Parameters
Initial condition - initial value of input signal
0 (by default) | scalar | vector | matrix
Sets the initial value of the input signal.
Block parameter |
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Values |
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By default |
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Output data type - output data type
bool (by default) | UInt8
Set the output data type to Bool or UInt8.
Block parameter |
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Values |
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By default |
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