Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 61)

1-49
IM 04L31A01-01E
Explanation of Functions
3
2
1
4
5
6
7
8
9
10
11
12
13
14
• Operation when the PV does not reach the wait zone within the wait time
If the wait time elapses before the PV reaches the wait zone, the operation switches
from wait mode to run mode at that point (even if the PV has not reached the final SP)
and transits to the next segment. However, if the wait time is set to 00:00:00, the wait
operation continues until the PV reaches the wait zone.
SEG.n SEG.n + 1
n = 1 to 98
EVn EVn + 1
Wait zone
Wait zone
Timer
stopped
Wait time
PV
The PV has not reached
the wait zone, but the
program transits to the
next segment when the
waittime has elapsed.
Final SP
SP
Note
If the wait time is changed during wait operation, wait operation continues using the new wait
time including the wait time that has already elapsed. If the new wait time is equal or shorter
than the wait time that has already elapsed, the wait operation ends at that point. If the wait
time is changed from 00:00:00 to some other value during wait operation, the wait operation
starts at that time using the new wait time.
Wait within the Segment
If the PV falls outside the wait zone specified with respect to the current SP when the
program operation is within the segment, the operation enters wait mode and the
program operation is delayed. For wait operation within the segment, wait operation
continues until the PV reaches the wait zone regardless of the wait time setting. When
the PV returns within the wait zone, the operation switches from wait operation to run
mode and the program operation is resumed. Wait operation is repeated every time the
PV falls out of the wait zone.
Segment n
Wait period
PV
Wait zone
Original SP
SP
1.11 Program Control Related Settings