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
