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PART 1: CX-Programmer
CHAPTER 4 – Reference
OMRON
CX-Programmer _Page 102
The minimum cycle time and the
Change
Button are displayed only for CJ2H CPU Units with unit version 1.1
or later or CJ2M CPU Units.
For certain CV-series PLCs if the ladder program contains Mark instructions, the PLC Cycle Time dialog
permits the measurement between the Start Mark and Stop Mark instructions.
Use the following procedure to measure PLC cycle time.
1, 2, 3…
1. Select the PLC object in the project workspace.
2. Select
the
Work On-line
button from the toolbar. A confirmation message is displayed;
select the
Yes
pushbutton to connect to the PLC.
3. Open the cycle time dialog using the
Cycle Time
command in the
PLC/Edit
menu.
The mean, minimum and maximum cycle time is shown in the
Cycle Time
fields.
Select the
Reset
button to empty the PLC’s history buffer for these fields – the values
will then be calculated and updated by the PLC using the latest values only.
4. To measure the time to execute between two points in a program, enter the Start mark
and stop mark numbers in the
Start Mark #
field and
Stop Mark #
field. Note that only
certain PLCs have this feature. Also, MARK instructions must have been placed in the
program/s and downloaded to the PLC. Select the
Measure
pushbutton – a measurement
will then be taken and displayed in the
Time
field. Select the
Abort
pushbutton to cancel
the measurement.
5. Select
the
Close
pushbutton to complete the operation.
Changing the Minimum Cycle Time Online
With CJ2H CPU Units with unit version 1.1 or later or CJ2M CPU Units, the minimum cycle time can be
changed to a specified value even during PLC operation in MONITOR Mode when the cycle time is set to
“constant” in the cycle time settings in the Timings/Synchronous Tab Page in the PLC Setup.
1, 2, 3…
1. Click
the
Change
Button in the PLC Cycle Time Dialog Box. The Constant Cycle Time
Setting Dialog Box will be displayed so that you can set a minimum cycle time.
2. Change the minimum cycle time (ms).
3. Click
the
OK
Button. The Constant Cycle Time Setting Dialog Box will be closed and
the minimum cycle time will be updated.
Содержание CX-PROGRAMMER V9
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