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(2) Settings required for execution of multiple programs
To execute multiple programs in the CPU module, names (file names) and execution conditions of the programs
must be set.
Set them in the Program tab of the PLC parameter dialog box.
(a) Program name
Enter the name (file name) of the program to be executed in the CPU module.
(b) Execute type
Select an execution type of the program set under "Program name".
The CPU module executes programs whose execution type has been set here according to the setting order.
1) Initial execution type ("Initial")
This program is executed only once when the CPU module is powered on or its status is switched from STOP
to RUN. ( Section 2.3.1)
2) Scan execution type ("Scan")
This program is executed once in every scan, starting in the next scan of which the initial execution type
program is executed and later. ( Section 2.3.2)
3) Low-speed execution type program ("Low speed") Note2.4Note4
This program is executed only when the constant scan function is used or a low-speed program execution
time value is set. ( Section 2.3.3)
4) Stand-by type ("Wait")
This program is executed only when its execution is requested. ( Section 2.3.4)
Figure 2.17 Program setting
Note4
(a) (b) (b) 5)
(c)
(d)
Programs are executed
according to the setting
order.
Note2.4
The Redundant CPU does not support the use of low-speed execution type programs. Therefore, "Low speed" cannot
be selected.
Redundant
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