DIF – Difference

Block SymbolLicensing group: STANDARD

Function Description
The DIF block differentiates the input signal u according to the following formula

y_{k} = u_{k} - u_{k - 1},

where $u_{k} = u$ , $y_{k} = y$ and $u_{k - 1}$ is the value of input u in the previous cycle (delay $T_{S}$ , which is the execution period of the block).

Input

u	Analog input of the block	Double (F64)
R1	Block reset (same state as after init)	Bool
HLD	Hold block execution	Bool

Output

y	Difference of the input signal	Double (F64)

Parameters

ISSF

Zero output at start-up

Bool

off ..: In the first cycle the output will be $y = u$ .
on ...: Zero output in the first cycle, $y = 0$ .

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