Operating instructions

Operating a project
8.1 Overview
MP 377, MP 377 PRO (WinCC flexible)
Operating Instructions, 10/2008, 6AV6691-1DR01-0AB0
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Optical feedback from operating elements
The operating element receives the focus and is selected. The configuration engineer can
also configure the selection of an operating element so that it deviates from the standard.
Further information on this may be available in your plant documentation.
The type of optical feedback depends on the operating element:
● Buttons
The HMI device outputs different views of the "Pressed" and "Unpressed" states,
provided the configuration engineer has configured a 3D effect:
– "Pressed" state:
– "Unpressed" state:
The configuration engineer determines the appearance of a selected field, for example,
line width and color for the focus.
● Invisible buttons
By default, invisible buttons are not displayed as pressed when they are touched.
No optical operation feedback is provided in this case.
The configuration engineer may, however, configure invisible buttons so that their outline
appears as lines when touched. This outline remains visible until you select another
operating element.
● I/O fields
When you select an I/O field, the content of the I/O field is displayed against a colored
background. With touch operation, a screen keyboard is displayed for the entering
of values.
Acoustic feedback from operating elements
As soon as the HMI device detects a touch of the touch screen or that a key has been
pressed, an acoustic signal is issued. You can activate or deactivate this acoustic
operation feedback.
Note
The acoustic feedback is only possible if you interact with the project directly on the touch
screen or press one of the keys of the HMI device. If you use an external mouse or keyboard
for interaction, no acoustic signal is issued.
Acoustic signal for inadvertent operations
If you try to enter an invalid character, the HMI device issues an acoustic signal in
accordance with the setting.