July 2004
Intermediate to advanced
352 pages
9h 30m
English
Content preview from Mitsubishi FX Programmable Logic Controllers, 2nd Edition
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24
Floating point numbers
Floating point number operation is available only with the FX2N and FX2NC PLCs,
and not with the FX1S and FX1N PLCs.
If these PLCs are not available, then the floating point programs in this section can
still be evaluated by using ladder logic tester.
24.1 Floating p oint number range
The advantage of using floating point operation in PLCs is that very small and very
large numbers can be processed.
Number range 3:403 10
þ38
to þ3:403 10
þ38
Smallest available change þ/ 1 :175 10
38
24.2 Number represent ation
Consider the result of 22=7. This can be represented using three different numbering
methods:
1. Integer ...
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