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Section 3 System Definition
<Extended setting>
Extended setting for memory allocation includes “AT range setting,” and “retain setting for automatically generated SFC
variables.”
(1) AT range
AT range is the memory area for the user to specify the memory allocation for variables. When an area is specified as AT range,
no variable is automatically assigned to it.
(2) Retain setting for automatically generated SFC variables
Step flags (step_name.X) and action flags (action_name.X) that are automatically generated by SFC are not declared as
variables and therefore cannot explicitly be made to be retain variables. To make step flags and/or action flags retain variables,
check “Step/action of SFC is assumed to be retain variables.”
<Setting procedure>
Click the [Extended setting...] button on the “Memory allocation setting” dialog box. The “Extended setting” dialog box opens.
After setting all necessary items, click the [OK] button to return to the “Memory allocation setting” dialog box
