Floating Point Number Editor - Omron NT4S Operation Manual

Standard Mode
4.6.4.2

Floating Point Number Editor

The variable type BCD-Number has a special feature.
The Editor for BCD-numbers is also referred to as the 'Decade Switch'.
With scaled variables, the value in the PLC changes by +1/-1, although the input
value which is actually displayed also depends on the defined scaling factor! This
means that special care must be taken whenever scaling is required. The Editor is
also suitable for making fine adjustments or as a decade switch with decimal carry-
over.
Possible Data Types:
- Positive integers (no entry of signs)
- Integers
- Positive fixed point numbers (no entry of signs)
- Fixed point numbers
Key Functions in the BCD-Number Editor
Keys: 1 to 9 1.)
2.)
3.)
Key: Plus 1.)
2.)
Key: Minus 1.)
2.)
Key: Cursor left
Key: Cursor right
The Floating-Point Number Editor supports Lword variables stored in IEEE format.
This variable type is not supported by every controller type. In this case, an alterna-
tive would be to resort to fixed point numbers in Lword format. Scaling factors are
also suitable for displaying precise fractional numbers.
The functions of the control and editing keys are identical to those of the Decimal
Number Editor.
Standard
Direct input of numerical values
Mix-Mode
Direct input of numerical values
Incremental
No Function
Standard
No Function
Mix-Mode and Incremental
Increases the value at the cursor position and influ-
ences the more significant digits when the range is
exceeded
(with a dynamic repeat function)
Standard
No Function
Mix-Mode and Incremental
Reduces the value at the cursor position and influ-
ences the more significant digits when this value
falls below the range (with a dynamic repeat func-
tion)
Moves the cursor within the editable variable to the
left by one position until it reaches the end of the field.
Moves the cursor within the editable variable to the
right by one position until it reaches the end of the
field.
Section 4-6
117