Technical data

SINAUT TD7 software package for the CPU
2.5 Data point typicals
Software
System Manual, 07/2009, C79000-G8976-C222-07
243
Range of
values:
0 or 1 ... 32767
No parameter specified: Default 270 is valid (corresponds
to 1%).
The encoding range of the analog value must be taken into consideration
when setting the threshold value. Raw values from S7 analog inputs are
always encoded in the range from 0 ... 27648 (= 0 ... 100 %) or + 27648 (= +
100%). Depending on the resolution of the analog input, the value jumps by
128 (at 8-bit resolution) or 1 (at 15-bit resolution). If the acquired analog
values have a different encoding range, the threshold value should be
entered according to this.
If no parameter is entered, the default value of 270 applies. This
corresponds to approximately 1% of the normal S7 analog raw value range.
Point to note with ThresholdValue = 0
Changes are not checked based on the threshold value. The analog value
message will only be sent in the following situations:
1. When there is a trigger over the TriggerInput input, typically a time-driven
or event-driven message trigger.
2. When there is a general request to the station or a single request for the
message.
3. When the analog value moves into the overflow or underflow range
(7FFFH or 8000H) (possibly after the suppression time set by
FaultSuppressionTime has elapsed).
Note
When MeanValueGeneration = TRUE, i.e. the analog values are sent as mean values, the
ThresholdValue parameter has no meaning.
Name: SmoothingFactor
Declaration: INPUT
Data type INT
Default: 1
Explanation Smoothing factor.