Floating Point Number' Representation; Hexadecimal Number' Representation - Omron NT4S Operation Manual

Standard Mode
4.6.1.5

'Floating Point Number' Representation

4.6.1.6

'Hexadecimal Number' Representation

80
The names for the images represent the images in the image list. The actual list will
look something like this:
This image list has been defined with four entries. The graphic selected by the
controller will be displayed.
All of the images in an image list should have the same output size to ensure that
they overwrite (overlap) each other completely. An I/O mask can contain multiple
selection image variables. These selection image variables can be of the types:
one-time output variable, cyclical output variable, or input variable. When the cycli-
cal output of selection images ('animation') is chosen, it must be remembered that
the rate of change will be slow due to the limitations of the hardware performance.
The more images that are output, the smaller the output performance. The selec-
tion image variable should therefore mainly be used for switching states or nearly
static processes.
The rules that apply to the Floating Point Number mode of representation are basi-
cally the same as those applying to the representation type Decimal Number -
variable type Standard. The only difference is that with this representation type, the
factor that is used to achieve scaling can be a floating point number; a divisor is
therefore not required. With floating point numbers, the reciprocal value can also
be generated, before the value is displayed.
Not every controller type supports the floating point format. There are different
floating point formats available for processing in the controller (for example, the
IEEE format).
The hexadecimal representation of numbers is frequently used to display address-
es when the PLC is programmed. This format is aimed for use by more experienced
operators! The positional significance of the displayed digits increases from right to
left. Numbers are expressed by the characters 0 to 9 and A to F. Only capital letters
and leading zeros are used for representation. The hexadecimal representation is
suitable for the data types Byte, Word and Lword. The length is limited to a maxi-
mum of 8 digits. There are no blanks between the characters.
16 4 16 3 16 2
0 E 4
16 1 16 0 Positional significance
5 A Display (0E45A
Section 4-6
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H