Siemens SIMATIC TP 270 Operating Instructions Manual page 133

Entering numeric values for the MP 270B 10" Touch or TP 270 10"
Numeric screen keyboard
The HMI device automatically opens the numeric screen keyboard for the input of numeric
values when you touch an I/O field on the screen. The HMI device automatically hides the
keyboard when input is complete.
The <Help> button is only active if an operator note is configured for the I/O field.
Figure 9-2
Procedure
Enter the characters of numeric values using the screen keyboard buttons. Confirm the input
value with <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.
When you input the first character, a tooltip appears showing the high and low limit values of
the input field.
TP 270, OP 270, MP 270B (WinCC flexible)
Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0
Screen keyboard for numeric input
Operate project
9.1 Basic principles of operation
9-7