GFK-0467K E-1
Using Floating-Point Numbers
There are a few considerations you need to understand when using floating-point numbers. The first
section discusses these general considerations. Refer to page E-5 and following for instructions on
entering and displaying floating-point numbers.
Note
Floating-point capabilities are only supported on the 350 and 360 series CPUs,
Release 9 or later, or on all releases of CPU352.
Floating-Point Numbers
The programming software provides the ability to edit, display, store, and retrieve numbers with
real values. Some functions operate on floating-point numbers. However, to use floating-point
numbers with the programming software, you must have a 350 or 360 series CPU (see Note above).
Floating-point numbers are represented in decimal scientific notation, with a display of six
significant digits.
Note
In this manual, the terms “floating-point” and “real” are used interchangeably to
describe the floating-point number display/entry feature of the programming
software.
The following format is used. For numbers in the range 9999999 to .0001, the display has no
exponent and up to six or seven significant digits. For example:
Entered Displayed Description
.000123456789 +.0001234567 Ten digits, six or seven significant.
–12.345e-2 –.1234500 Seven digits, six or seven significant.
1234 +1234.000 Seven digits, six or seven significant.
EAppendix