![Delphin Expert Logger Manual Download Page 162](http://html.mh-extra.com/html/delphin/expert-logger/expert-logger_manual_2471097162.webp)
Expert
Logger
value.
Variable (trigger)
means that the channel set for the variable in the
Variables
tab is used as a trigger channel. A trigger event is a rising edge.
If this trigger occurs, the value that is programmed into the program step
for the trigger is assumed as a setpoint and the next program step is then
started. This method enables time control of a program sequence to be
expanded by an event control.
Global settings (for all rows)
Relative time
: Based on the previous value y
i-1
, the t
i
value indicates how
long it will take to reach the y
i
value.
Absolute time
: Based on the starting point (first row), the t
i
value indicates
how long it will take to reach the y
i
value
Cycle time
: The cycle time determines in which time frame the values are
output between two program steps. Intermediate values are linearly inter-
polated, i.e. calculated using a linear equation. The intervals between pro-
gram steps used in the table should be integral multiples of the cycle time.
Variables tab
The tab appears only if there are variables in the table.
Specify whether the variables used are fixed values (
Manual value
) or are
to be imported from a
Channel
.
4.11.20
Statistics
This software channel enables a source to be evaluated with a range of stat-
istical functions.
Moving minimum/maximum
: This minimum or maximum is calculated
from a configured series of values numbering from 2 to 1000 values.
Moving indicates that each new value from the source is stored to the data
series and triggers calculation of the minimum or maximum from the accu-
mulated values and output of the result. If the number of values reaches
the specified maximum, the data series is then full and a new value from
the source then overwrites the oldest value.
A device reboot or a configuration change deletes all the accumulated val-
ues.
Block evaluation
: The number of values in the data series is determined
by the frequency of new source values within an interval set by trigger
events. A change in the specified channel produces the trigger event.
Several statistical functions are available in this mode.
Edge triggering
: The selected function is calculated at the time of the trig-
ger event from the data series that has accumulated between two trigger
events. After calculation, the result is output and all the accumulated val-
ues
are deleted.
162
Delphin Technology AG
Januar 2018
Expert
Logger
Manual