Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 244)

6-19
IM 04L31A01-01E
Operations during Control Operation
6
6.4 Operations on the Program Selection Display and Program Control Display (Only on Models with the
Program Control Option)
Explanation
Starting Program Control
Start program control by displaying the program selection display, selecting the pattern
number ([PT NO.] soft key), and starting the control ([RUN] soft key). You can only start
the program control on the program selection display.
When you start the program control, the program selection display switches to the
program control display. On the program control display, run and reset the program
control using a pop-up window that appears by pressing the [RUN/RESET] soft key.
Selecting the Program Pattern Start Segment
If you wish to set the program control start segment to a value other than [1], select the
start segment number using a number within [Segments]. Set the value on the program
selection display before program control. The value is reset to [1] when you reset the
program control.
Setting the Delay Time for Starting the Program Pattern Control
If you wish to delay the starting of the program pattern control by a specified time, set the
time from program control start to program pattern control in the range of [00:00:00] to
[99:59:59]. Set the value on the program selection display before program control. The
value is reset to [00:00:00] when you reset the program control.
Operation Mode during Program Control
The following operation modes are available during program control. Of the operations
shown in the figure below, [RUN/STOP] and [PRG/LOG] switch operations are carried
out on the control group display. For these operations, see section 6.1, “Operations on
the Control Group Display (Switching Displayed Information and Control Operation
Modes).”
Reset mode
Local operation
mode
Program operation
mode
Hold operation mode
During program control
HOLD
Release HOLD
PRG RUN LOC or program
LOCAL end
RUN
RESET or
all loop STOP
PRG RUN
RESET, program end,
or all loop STOP PRG
In the figure, “reset mode” refers to the status in which the program control of all loops is
stopped. When program control is started, all loops enter “program control mode.”
When in “reset mode,” you cannot set specified loops to “program control mode.”
However, you can switch specified loops to “local mode” or stop the operation after
program control is started. In addition, even when certain loops are in “local mode,” the
operation of all loops stops when you set “reset mode.”
Display Update Rate on the Program Control Display
The update rate of the waveform section follows the settings specified by [Set mode] >
[#3 Trend/Save interval, Message, File, USER key, DST] > [Time/div]. The update rate
of other information is 1 s.
Note
If the segment time is set considerably smaller than the waveform display update rate (such
as “30 min/div” for the waveform display update rate and “10 s” for the segment time),
segments cannot be displayed on the pattern waveform display due to the limitation of the
display resolution. Use caution when the segment time is set short.