Sterling STT 300 operating instructions Entering Numerical Values

General Operation

3.3.1Entering Numerical Values

Input using numer- In fields that allow the operator to enter a numerical value, you enter the nu-

ical keypadmerical value character by character using the keypad on the system key- board.

Changing the	If there is a value in the field already, it is cleared completely from the field
value	when the first character is entered. Once input has been started, you cannot
	exit from the field until the input has been entered or canceled.
Right-justified	In numerical fields, input initially is normally right-justified. Digits that have
input	already been entered are moved to the left (pocket-calculator format).
	Exception:
	Input fields for variables in KM format – for instance, when calling the PU
	functions STATUS/FORCE VAR – are changed to left-justified . When input
	begins, the old value does not disappear from the display completely but its
	bit pattern is overwritten one character at a time. You move the cursor in this
	type of field by pressing	or	with activated Shift Lock mode.
Limit-value check	You can configure limit values for numerical input fields. In this type of
	field, a limit-value check takes place, i.e. the entered values are applied only
	if they lie within the configured limits. If a value outside these limits is en-
	tered, a system message is displayed and, after it has been canceled, the old
	value is restored in the field.
Decimal places	If a numerical field has been configured with a certain number of decimal
	places and too many have been entered, they are ignored; if too few have
	been entered, the field is padded with zeroes.

2	OP7, OP17
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