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Release 03/2004
5.3 Operating the Project
Softkeys with global function assignment
A softkey with global function assignment always
triggers the same action on the HMI device or PLC
regardless of the screen currently open. These actions
include:
• Calling in a screen
• Printing the screen displayed
Within a screen, a softkey can only have one function
assigned – either global or local. In the case of local
and global functions, the local function has priority.
Softkeys with local function assignment
A softkey with a local function assignment relates to a
specific screen and, thus, is only effective in the active
screen.
The function of a softkey can vary from screen to
screen.
The two-row softkeys are particularly suitable for
implementing binary states and machine functions, as
illustrated in the following screen.
ON
START
OFF
Figure 5–6
Example of two row, labeled keys
Operating Instructions (Compact) OP 77B
6AV6691-1EA01-0AB0
2 S H U D W L Q J W K H 2 3 %
+
STOP
–
5–7
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