Siemens OP17, Equipment Manual

Page: 42 / 198

3-12
Equipment Manual OP7, OP17
Release 04/99
3.2.4 Entering Timer Values
You enter timer values character-by-character (digit-by-digit) via the input
keys of the system keyboard. If the field already contains a value, this entire
value is deleted from the field as soon as you enter the first new character.
Once you have begun entering a value, you can no longer quit this field until
you have confirmed or canceled your input.
The following values can be entered in input fields used to display timers:
Possible values Keys Description
Decimal value
0
...
9
.
The input keys of the system key-
pad belong to the numerical key
assignment.
Inputs in fields used to display timers usually begin at the right edge, i.e.
they are right-aligned. Digits entered are moved to the left (pocket calculator
format).
Limits can be configured for input fields used to display timers. A limit
check is performed in these fields. The values entered are only applied if they
are within the limits configured. If a value is entered that is not within these
limits, a system message is displayed. After you have canceled this message,
the old input value is re-entered in the field.
If a field used to display a timer has been configured with a specific number
of digits to the right of the decimal point, excess digits to the right of the
decimal point are ignored and digit spaces that have not been used are zero-
filled after you confirm your input.
Entering via
system keys
Possible values
Right-aligned
input
Limit check
Digits to the right
of the decimal
point (with S7-200)