Time delay of an analog signal.

 The time delay Tim can vary within the interval:

      { 0 - 100 * MaxCount * ScanTime }

 The delay is implemented in a 100-step shift register.
 The time resolution per step is MaxCount * ScanTime and
 maximum time delay is 100 * MaxCount * ScanTime.

 Several Adelay objects can be connected in series when
 a higher resolution is needed.
 If the time resolution per step is worse than the
 program cycle time (i.e. MaxCount > 1) a mean value is
 formed and stored in shift register 1.

 The very first sample is stored in every shift
 register. At sample number 2 a mean value is calculated
 from the value in shift register ( position) 1 and the
 input signal, thereafter the mean value is restored in
 shift register 1. This is repeated up to sample
 MaxCount - 1. At sample number MaxCount a shift of the
 register contents takes place and the input signal is
 stored direct into the shift register 1. During the
 time up to the next shift the mean value of the input
 signal is stored in shift register position 1.
 The output signal is fetched from the register
 representing the actual delay.

 1. With MaxCount = 1 and ScanTime = 20 ms the maximum delay time
    is 100 * 1 * 1 / 50 seconds.
    if the delay Tim = 1, ActVal(t) will be = In(t-50), i.e. the input
    signal is delayed by 50 execution cycles.

 2. If MaxCount = 1 and ScanTime = 1 second represent each register the
    delay of one second. Tim specifies from which register to get ActVal.

 Value of the input signal.

 Actual time delay ( in seconds ) in the interval
 { 0, 100 * MaxCount * ScanTime }.

 Delayed signal according to Tim.

 Program cycle period in seconds.

 A cyclic register.

 Storage index, which points to the next store location.

 Number of cycles per shift register step; i.e. register
 shift is done at every MaxCount:e program cycle
 execution.

 Counter; used at the initial phase.

 Loop counter for shift.

 The operator's authorities regarding to Tim.
    0   -- Changes not allowed.
    !=0 -- Changes allowed.

 The minimum and maximum allowed value of Tim at changes
 made by an operator.

 Example

 1  With MaxCount = 1 and ScanTime = 20 milliseconds the
    maximum time delay is 100 * 1 * 1 / 50 = 2 seconds.
    If the delay Tim = 1, ActValt will be = In     ,
    t-50, i.e. the input signal is delayed by 50 execution
    cycles.
 2  If MaxCount = 1 and ScanTime = 1 second represent
    each register the delay of one second. Tim specifies
   from which register to get ActVal.

 The maximum allowed value of Tim at changes made by an operator.