This box enables you to select the main options for the management of Online change. Please refer to the description of Online change capabilities for further details about this feature.

This box allows you to enable or disable the Online change feature. When Online Change is enabled, in order to allow the declaration of new variables and blocks, you have to define the amount of memory to be allocated in the target for each type of data. This includes:

• The number of variable for each type (8, 16, 32 or 64 bits, character strings).
• The number of function block instances.
• The amount of memory for storing character strings.
• The amount of memory for private data of function block instances.
• The amount of variables published (with embedded symbol or profile).
• The sizing of extra segment for storing complex variables.

To setup a value, select the corresponding item in the list, select the Value option, enter a new number in the Value box and press the Set button. You can select several items in the list for assigning the value to any selected items.

If your project has been built, the box shows you in the list the size actually used by the application according to the last build. A progress bar shows you the percentage of used space for each item. In addition, instead of entering an absolute value, you may select to enter a "free margin" to add the used space.

Hint: If Online change is ACTIVE and a new variable is created in the variable editor, the Create Variable dialog will be opened automatically.

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