NCT Group NCT 990T - Manual (Page 20)

2 General Operating Knowledge
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– The digit entered is interpreted as an integer or as a decimal digit before or after the decimal
point has been pressed, respectively.
– It is not necessary to enter the right-hand insignificant zeros behind the decimal point or the
decimal point (in the case of an integer value).
– The data input can be started with decimal point when the integer part of a number is zero.
– Key and incremental operator I (provided they are permissible for the given address
character) may be hit several times during the input of the number, any time before the
use of arrow keys terminating the numeric input. The default is a positive absolute
value. The incremental data input and the sign will be indicated in the first and second
positions of the location in front of the number, respectively.
– The control system displays DATA error message during data input whenever a formal error
is committed in the number to be specified for the given address (exceeding the number
of integer or decimal digits, illegal use of the incremental operator or one of keys
or .
– A numeric input in progress can be cleared any time by key <DEL> before termina-
tion. In this case the condition preceding the commencement of numeric input is
restored.
The effects of keys and terminating a numeric input differ from each other in that
forward or backward stepping in the address chain will be performed upon depression of
or , respectively. Keys and can be used for stepping the address chain (in
the absence of a numeric input) as well as for the termination of a numeric input.