Spirit flow-x, Справочник по функциям

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Flow-X─ Function Reference
4-257
Flow-X General functions - fxPeriodMin
fxPeriodMin
Description
The function determines a minimum value over a particular period.
Inputs and outputs
Function
inputs Remark EU SW tag Range Default
Name Name used for tag prefix and
retentive storage.
Input value Value for which the minimum
has to be determined Same as
linked cell
Enabled 0: Disabled
<> 0: Enabled
EN
Period type Type of period:
1: Second
2: Minute
3: Hour
4: Day
5: Week
6: Month
7: Quarter
8: Year TYP
Period count Number of periods (e.g. 5
minutes, 8 hours) CNT 1..1e11
Period start Absolute start date and time
of the period. This will be
used as the reference point to
calculate the next period
rollover from.
The value may be defined in
the past or the future. The
next rollover period will be
calculated accordingly (so
forwards or backwards in
time). START <DATETIME>
Function
outputs Remark EU SW tag Alarm Fallback
Current
minimum Minimum over the
current period. Same as
input ‘Input
value’ CUR 0
Previous
minimum Minimum over the
previous period. Same as
input ‘Input
value’ PRV 0
Pre-
previous
maximum Minimum over the
pre-previous period
(i.e. period before the
previous period). Same as
input ‘Input
value’ PPRV 0