ABB AC 800M, Library Object Style Manual

Page: 69 / 120

Section 4 Engineering Interface Interaction principles
3BSE042835-600 69
Figure 16. Interaction window design.
Interaction principles
Synchronization of data write
Sometimes several values should be applied simultaneously, for example the tuning
parameters for a PID-controller. There is a built in solution for this in the Control
Builder graphics. It is possible to assign OK/Cancel buttons that are associated with
several input fields.
Another solution is that the values are stored in a temporary set of parameters when
an Apply button is pressed. There should also be an Undo button to restore the used
values. This method requires extra variables in the controller, but is good to use
since the same method can be used for the Operator Workplace graphics.