Mitsubishi 00JCPU, Руководство пользователя

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CHAPTER2 SEQUENCE PROGRAMS
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2.3 Settings When Progr
am is Divided
5) Fixed scan execution type ("Fixed scan")
This program is executed at time intervals specified with fixed scan interval and unit. ( Section 2.3.5)
• Fixed scan interval ("Fixed scan interval")
Enter the execution interval of fixed scan execution type program.
The setting range varies depending on the setting unit.
•When the unit is "ms" : 0.5 to 999.5ms (in increments of 0.5ms)
•When the unit is "s" : 1 to 60s (in increments of 1s)
• Unit ("In unit")
Select the unit ("ms" or "s") of the fixed scan interval.
(c) File usability setting
For each program, determine whether to use the file specified for the file register, initial device value, device
comment, and local device in the PLC file tab of the PLC parameter dialog box.
The default is set to "Use PLC file setting".
Table2.1 shows the processing when "Not used" is selected.
Figure 2.18 File usability setting
Table2.1 File usability setting item and processing when "Not used" is selected
Item Processing
File register The file register cannot be used in the program.
Initial device value Initial device values are not set when the file name is same as the program file.
Device comment Device comments cannot be used in the program.
Local device Data in local devices cannot be saved or restored when program type is changed.