Eaton easyE4 User Manual

6. Function blocks
6.3 UF - User function block
l
When the program is deleted with the Com-
munication/Program/Configuration/Delete device button
l
By any change of the retentive range via Project view/System settings/Retention.
l
By any changes to the parameters for the remote markers of a visualization
device.
l
When deleting the device from the workspace of the project view.
The following exception applies to retentive markers:
Marker contents
If this option is enabled, the contents of the existing retentive marker range will be
retained when the program is transferred. The ACTUAL marker values are retained.
In order for this to work, however, the marker range defined as being retentive must
remain unchanged.
Function block contents
If this option is enabled, the contents of the existing retentive operand range will be
retained when the program is transferred.
In order for this to work, however, the function block defined as being retentive must
remain unchanged.
Comment section
This box can be used to enter an optional comment, e.g., in order to distinguish
between various versions of a user function block.
6.3.4 Programming a user function block
Once you have created a user function block, the view will automatically switch to
the Programming view for the user function block. Moreover, a tab with the user func-
tion block's name and version will appear next to the Main program tab in the work
pane. This tab will be green as long as the user function block is not being used in a
main program. As soon as the function block is used in the main program, however,
the tab will change color to yellow.
User function blocks are programmed exactly the same way as a main program. The
only difference is that there are slightly fewer operands available. The list of avail-
able operands and function blocks will automatically change to reflect this.
You should be in the Programming view for the user function block. Following is a
screenshot showing an example in which a timing relay is programmed with the flash-
ing operating mode.
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Eaton easyE4 Specifications

General

Brand	Eaton
Model	easyE4
Category	Relays
Language	English