Checkreal - Omron NY532-5400 Reference Manual

CheckReal

The CheckReal instruction checks a real number to see if it is infinity or nonnumeric data.
Instruction
CheckReal Real Number
Check
Variables
Name Meaning
In Real
number
Out Return
value
Nan Nonnumeri
c data
check
result
PosInfinite Positive
infinity
check
result
NegInfinite Negative
infinity
check
result
* If you omit an input parameter, the default value is not applied. A building error will occur.
Bit strings
In
Out OK
Nan OK
PosInfinite OK
NegInfinite OK
NY-series Instructions Reference Manual (W560)
Name FB/FUN
FUN
I/O Description
Input Real number
Always TRUE
TRUE: Nonnumeric data
FALSE: Not nonnumeric
data
TRUE: Positive infinity
Output
FALSE: Not positive infinity
TRUE: Negative infinity
FALSE: Not negative infinity
Graphic expression
(@)CheckReal
EN ENO
In
Nan
PosInfinite
NegInfinite
Valid range
Depends on data type.
TRUE only
Depends on data type.
Integers
OK OK
2 Instruction Descriptions
ST expression
CheckReal(In, Nan, PosIn-
finite, NegInfinite);
Out
Unit Default
--- *
--- ---
Times, durations, dates,
and text strings
2
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