Operate project
9.1 Basic principles of operation
TP 270, OP 270, MP 270B (WinCC flexible)
9-6
Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0
Figure 9-1
Example of numeric input on the screen keyboard
Note
The <BSP> key corresponds to the <Backspace> key and deletes the character to the left of
the current cursor position.
Procedure
Numeric and hexadecimal values are entered, character by character, using the screen
keyboard buttons. Confirm the value entered by pressing <Enter> or cancel it with <ESC>.
Both functions will close the screen keyboard.
Note
The numeric input fields may be assigned limits. In this case, the system accepts only the
values which lie within the configured range. The system rejects any values which are
outside these limits and restores the original value. In this case, the HMI device outputs a
system alarm.
If configured, the lower and upper limit values are displayed when the screen keyboard is
opened.
Note
When the screen keyboard is open, PLC job 51, "Select Screen" has no function.
