Azbil DCP31 - PV start; Cycle

5-13
Chapter 5. FUNCTIONS

PV start
IfPVstartissetintheprogramsetup,PVis
startedbyregularRUNoperation.
ThefirstpointwherePVmatchestheSPinthe
programpattern(includingbiasforbothPV
andSP)issearchedfor,andoperationisstarted
fromthatpoint.
However,notethatifamatchingpointisnot
found,operationisstartedfromthebeginning
ofsegment1.
WhenPVhasstarted,eventoperatingpoints
andthetimeoftimeeventsareautomatically
corrected.IfthePVstartfunctionisselected
bysetupdataC52toC54settingsrelatingto
externalswitchinput,PVstartcanbeexecuted
withoutsettingPVstartintheprogramsetup.
PVstartisvalidforsegmentsinthecurrently
selectedprogram,andinvalidforthesegmentat
thepatternlinkdestination.

Cycle
Thecyclefunctionisforrepeatingoperation
fromtheNo.1segmentoftheprogrampattern
tothefinalsetsegmentforapresetnumberof
cycles.Thenumberofcyclescanbesetupto
9999.
Whenanumberofcycles“n”isset,theopera-
tioncountbecomes“n+1”.
Whenexecutingcycleoperation,operation
attheendpointofthefinalsegmentisnot
carriedout,andoperationisrestartedwiththe
settingsofevents1to3andtimeevents1to
5cleared.Atthistime,PVisnotstartedand
operationstartsfromtheNo.1segmentevenif
PVstartisset.
IftheSPsatthepatternstartandendpointsdo
notmatch,theSPchangesinasteppedmanner
duringcycleoperation.
PV start points
(1) PV starts at point A where the PV value first
crosses the SP pattern.
(1)' PV starts at point B where the PV value first
crosses the SP pattern.
(1)" Point C of segment 1 is the PV start point
since there is no point where the PV value
crosses the SP value.
A
C
A'
B
SP pattern
Start point
Current
PV value
Start point
Start point
(1)
(1)'
(1)"
Cycle 1
Time
1
2
3
4
5
6