Technical data

SINAUT TD7 software package for the CPU
2.5 Data point typicals
Software
242 System Manual, 07/2009, C79000-G8976-C222-07
Range of
values:
0 ... 32767 [ms]
No parameter specified: Default value 500 ms is valid.
The acquisition interval is required for the following parameters:
• For the processing of the threshold value according to the integration
principle (threshold integration)
• For smoothing the analog input value (SmoothingFactor)
• For calculating the mean values (MeanValueGeneration)
The value must be selected high enough so that it is certain that a new value
was acquired over the analog input. The interval to be specified has to be at
least as long as the encoding time of the analog input module being used at
the selected resolution (8 ... 15 bits).
If no parameter is specified, the default of 500 ms applies. This time is high
enough to be applied even at the highest resolution and for analog modules
with the maximum number of inputs.
If mean values are calculated, SamplingPeriod should not be less than 500
ms. If mean values are calculated over very long periods, the time must be
increased as follows:
• Mean value calculation period 12 h: SamplingPeriod = 1000 [ms]
• Mean value calculation period 24 h: SamplingPeriod = 2000 [ms]
Specifying a SamplingPeriod that is too short may lead to an overflow of
internal accumulation counter (must not exceed max. value 2,147,483,647 of
a double integer). When an overflow is detected, the invalid mean value of
8000H is transmitted for the current mean value calculation period.
Name: ThresholdValue
Declaration: INPUT
Data type INT
Default: 270
Explanation Threshold value.