Siemens SIMATIC HMI TP 170A Equipment Manual page 29

Meanings of buttons
Table 4-1 Significance of buttons
Button
...
...
Enter value
Characters entered are aligned to the right. On entering a new character, all those
already entered are shifted one position to the left (pocket calculator format).
On exceeding the maximum number of characters, the last character entered is
overwritten.
Limit values
Limit values can be configured for numeric input fields. In this case, values
entered are only accepted when they lie within the limits configured.
Note:
If an attempt is made to enter a value which is outside the configured limit values,
the system keyboard is closed and the original value reinserted. In addition, a
system message is triggered.
TP 170A Equipment Manual
Release 12/99
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Function
Enter digits
Enter characters
Change sign
Enter decimal point
Move input position
to the left
Move input position
to the right
Cancel (Escape)
Delete character
Enter
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Operating the TP 170A
Purpose
Enter digits 0 to 9.
Enter the characters A to F.
Change sign from to and
+ –
back.
Enter decimal point or
comma. The assignment
and labeling of this button is
language–dependent.
Move current input position
one character to the left.
Move current input position
one character to the right.
Discard input and close the
system keyboard.
Delete the character to the
left of the input position.
Confirm input and close the
system keyboard.
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