[DLY_R] Delay for Real value

Function block DLY_R delays the input signal according to the delay time and provides it at the output.

DLY_R delays the input signal according to the delay time and provides it at the output.

Out_(t) = ln_(t-Dly)

DLY_RI writes each new input value [In] to its buffer. The real input value is new if the input value changes from the last saved input value by more than the threshold value [TshVal]. After the delay [Dly] expires, this input value is provided at the output. The last input value remains pending at the output until the next delayed input value is provided.

Multiple new input values

Multiple new input values arriving within the delay time are saved in sequence in the buffer (ring buffer). If the buffer is full (max. 100 values), the oldest saved input value is provided even if the delay time has yet to expire. This forced output occurs max. in the cycle time. No values are lost. The forced output is displayed [Sta]=1.

The initial value [Init] on the output is provided until the first delayed input value is provided.

Pins

Input	Description	Data type	Default value Value range
In	Input	Real	0.0
Dly	Delay Time by which a new input value is displayed. This parameter can be interconnected to permit simultaneous delay parameterization of multiple DLY_xxx function blocks.	Time	0 ms 0s…120s
Dly	0ms: No delay 1…999ms: Delay = 1s 1…120s: Delay in steps of 1 second
Init	Initialization Initialization value until the first delayed input is provided.	Real	0.0
TshVal	Threshold value Configured value to control function block write attempts. An attempt is permissible only if the change of value is greater than or equal to [TshVal]. Note Cannot be set to 0.0.	Real	0.1

Output	Description	Data type	Default value Value range
Out	Output	Real	0.0
Valid	Valid	Boolean	0
Valid	0 - No input value provided, [Out] = [Init]. 1 - Normal function.
Sta	State	Boolean	0
Sta	0 - Normal function. 1 - Delay time violated. In extreme cases, the saved input values are provided in cycles.

Application

DLY_R allows for cascaded control of blinds motors to prevent electrical peaks when starting up simultaneously.