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19.2
Logical Negation
NOT(_E)
These functions output the logical negation of input values.
Ladder diagram
[Without EN/ENO]
s
d
Setting data
■Descriptions, types, and data types
Argument
Description
EN
Execution condition (TRUE: Execution, FALSE: Stop)
s
Input
ENO
Output status (TRUE: Normal, FALSE: Abnormal)
d
Output
Processing details
■Operation processing
• These functions calculate the logical negation for each bit of the BOOL, WORD, or DWORD type data input in (s), and
output the operation result from (d) in the same data type as (s).
Ex.
When the data type is WORD
0
1
1
0
1
0
(s)
1
0
0
1
0
1
(d)
• A value input to (s) is the BOOL, WORD, or DWORD type data value.
■Operation result
1.
Function without EN/ENO
The operation processing is executed. The operation output value is output from (d).
2.
Function with EN/ENO
The following table lists the execution conditions and operation results.
Execution condition
EN
TRUE (Executes operation)
FALSE (Stops operation)
*1 When FALSE is output from ENO, data output from (d) is undefined. In that case, modify a program so that the data output from (d) is
not used.
Operation error
There is no operation error.
[With EN/ENO]
EN
ENO
s
d
1
1
0
0
0
0
1
NOT
0
0
1
1
1
1
0
Operation result
ENO
TRUE
*1
FALSE
Structured text
[Without EN/ENO]
d:=NOT(s);
[With EN/ENO]
d:=NOT_E(EN,ENO,s);
Type
Input variable
Input variable
Output variable
Output variable
1
1
1
0
0
0
(d)
Operation output value
Indefinite value
19 STANDARD BITWISE BOOLEAN FUNCTIONS
Data type
BOOL
ANY_BIT
BOOL
ANY_BIT
801
19.2 Logical Negation
19
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