Mitsubishi Electric 09R927, Руководство по структурному программированию

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5.7 Standard Comparison Functions
175
FXCPU Structured Programming Manual
(Application Functions)
1
O
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Function Li
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Functi
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Cons
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Ho
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Explanati
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Func
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Appl
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Functions
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Stan
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Functi
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Correspondence be
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5.7.3 EQ_E
Outline
This function compares data with regard to "= (equal)".
1. Format
*1. Output variable
2. Set data
In explanation of functions, I/O variables inside ( ) are described.
Explanation of function and operation
1) This function compares the contents of devices specified in
…
, and outputs the operation result
expressed as the bit type data to a device specified in .
This function executes comparison [ = ] & [ = ] &
…
& [ -1 = ].
a) This function outputs "TRUE" when all comparison results are " (n-1) = (n)".
b) This function outputs "FALSE" when any comparison result is " (n-1)
≠
(n)".
2) The number of pins in can be changed.
Cautions
When handling 32-bit data in structured programs, you cannot specify 16-bit devices directly, different from
simple projects. Use labels when handling 32-bit data.
You can specify 32-bit counters directly, however, because they are 32-bit devices.
Use global labels when specifying labels.
Program example
In this program, the contents of devices specified in and are compared, and the operation result is
output to a device specified in .
FX
3U(C)
FX
3G
FX
2N(C)
FX
1N(C)
FX
1S
FX
U
/FX
2C
FX
0N
FX
0(S)
Function name
Expression in each language
Structured ladder ST
EQ_E
EQ_E(EN,_IN,_IN,Output label);
Example:
EQ_E(X000,D0,D10,M0);
Variable Description Data type
Input
variable
EN Execution condition Bit
_IN (
…
)
Compared data, or word device which stores such data ANY_SIMPLE
Output
variable
ENO Execution status Bit
*1 ( )
Device which will store the comparison result Bit
[Structured ladder]
[ST]
EQ_E
EN ENO
*1 M0
X000
_IN D0
_IN D10
s1
d
s1
d
s1 s2 s2 s3
sn sn
s s
s s
s
s1 s2
d
EQ_E
EN ENO
g_bool2
g_bool1
g_int1
g_int2
_IN
_IN
g_bool3
g_bool3:=EQ_E(g_bool1,g_int1,g_int2,g_bool2);