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5.1 Type Conversion Functions
5.1.7 Word (signed), double word (signed) type 
bit type conversion
5-17
5
APPLICATION 
FUNCTIONS
INT_TO_BOOL(_E), 
DINT_TO_BOOL(_E)
INT_TO_BOOL(_E), DINT_TO_BOOL(_E)
(2) DINT_TO_BOOL, DINT_TO_BOOL_E
Converts double word (signed) type data input to   into bit type data, and outputs the 
operation result from  .
When the input value is 0, FALSE is output in bit type data.
When the input value is other than 0, TRUE is output in bit type data.
Operation result
(1) Function without EN/ENO
An operation is executed and the operation value is output from  .
(2) Function with EN/ENO
The following table shows the executing conditions and operation results.
*1: When FALSE is output from ENO, the data output from   is undefined.
In this case, create a program so that the data output from   is not used.
Operation Error
No operation error occurs in the execution of the INT_TO_BOOL(_E) and 
DINT_TO_BOOL(_E) functions.
Program Example
(1) The program which converts word (signed) type data input to   into bit type data, and 
outputs the operation result from  .
(a) Function without EN/ENO (INT_TO_BOOL)
[Structured ladder/FBD]
[ST]
g_bool1 := INT_TO_BOOL(g_int1);
EN
ENO
TRUE (Operation execution)
TRUE
Operation output value
FALSE (Operation stop)
FALSE
*1
Undefined value
s
d
Double word (signed) type
12345678
0
Bit type
TRUE
FALSE
s
d
d
d
d
d
s
d
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5-18
5.1 Type Conversion Functions
5.1.7 Word (signed), double word (signed) type 
bit type conversion
INT_TO_BOOL(_E), DINT_TO_BOOL(_E)
(b) Function with EN/ENO (INT_TO_BOOL_E)
[Structured ladder/FBD]
[ST]
g_bool3 := INT_TO_BOOL_E (g_bool1, g_int1, g_bool2);
(2) The program which converts double word (signed) type data input to   into bit type data, 
and outputs the operation result from  .
(a) Function without EN/ENO (DINT_TO_BOOL)
[Structured ladder/FBD]
[ST]
g_bool1 := DINT_TO_BOOL(g_dint1);
s
d
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5.1 Type Conversion Functions
5.1.8 Word (signed), double word (signed) type 
single-precision real type conversion
5-19
5
APPLICATION 
FUNCTIONS
INT_TO_REAL(_E), 
DINT_TO_REAL(_E)
INT_TO_REAL(_E), DINT_TO_REAL(_E)
5.1.8  
Word (signed), double word (signed) type  single-precision 
real type conversion
INT_TO_REAL(_E), DINT_TO_REAL(_E)
Function
Operation processing
(1) INT_TO_REAL, INT_TO_REAL_E
Converts word (signed) type data input to   into single-precision real type data, and outputs 
the operation result from  .
INT_TO_REAL(_E)
DINT_TO_REAL(_E)
_E: With EN/ENO
indicates any of the following 
functions.
INT_TO_REAL
INT_TO_REAL_E
DINT_TO_REAL
DINT_TO_REAL_E
Input argument,
EN:
Executing condition (TRUE: Execution, FALSE: Stop)
:Bit
s(_INT, _DINT): Input
:Word (signed), double word (signed)
Output argument,
ENO:
Execution result (TRUE: Normal, FALSE: Error)
:Bit
d:
Output
:Single-precision real
Basic
Process
High
performance
Redundant
Universal
LCPU
EN
ENO
d
s
INT_TO_REAL_E
(EN, s, d);
ENO:=
Structured ladder/FBD
ST
INT_TO_REAL_E
s
d
Word (signed) type
1234
Single-precision real type
1234.0
s
d
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5-20
5.1 Type Conversion Functions
5.1.8 Word (signed), double word (signed) type 
single-precision real type conversion
INT_TO_REAL(_E), DINT_TO_REAL(_E)
(2) DINT_TO_REAL, DINT_TO_REAL_E
(a) Converts double word (signed) type data input to   into single-precision real type data, 
and outputs the operation result from  .
(b) The number of significant figures of single-precision real type data is approximately 7 
since the data is processed in 32-bit single precision. Accordingly, the converted data 
includes an error (rounding error) if an integer value is outside the range of -16777216 
to 16777215.
Operation result
(1) Function without EN/ENO
An operation is executed and the operation value is output from  .
(2) Function with EN/ENO
The following table shows the executing conditions and operation results.
*1: When FALSE is output from ENO, the data output from   is undefined.
In this case, create a program so that the data output from   is not used.
EN
ENO
TRUE (Operation execution)
TRUE
Operation output value
FALSE (Operation stop)
FALSE
*1
Undefined value
s
d
Double word (signed) type
16543521
Single-precision real type
16543521.0
s
d
d
d
d
d
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5.1 Type Conversion Functions
5.1.8 Word (signed), double word (signed) type 
single-precision real type conversion
5-21
5
APPLICATION 
FUNCTIONS
INT_TO_REAL(_E), 
DINT_TO_REAL(_E)
INT_TO_REAL(_E), DINT_TO_REAL(_E)
Operation Error
No operation error occurs in the execution of the INT_TO_REAL(_E) and 
DINT_TO_REAL(_E) functions.
Program Example
(1) The program which converts word (signed) type data input to   into single-precision real 
type data, and outputs the operation result from  .
(a) Function without EN/ENO (INT_TO_REAL)
[Structured ladder/FBD]
[ST]
g_real1 := INT_TO_REAL(g_int1);
(b) Function with EN/ENO (INT_TO_REAL_E)
[Structured ladder/FBD]
[ST]
g_bool3 := INT_TO_REAL_E(g_bool1, g_int1, g_real1);
(2) The program which converts double word (signed) type data input to   into single-precision 
real type data, and outputs the operation result from  .
(a) Function without EN/ENO (DINT_TO_REAL)
[Structured ladder/FBD]
[ST]
g_real1 := DINT_TO_REAL(g_dint1);
s
d
s
d
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5-22
5.1 Type Conversion Functions
5.1.9 Word (signed), double word (signed) type 
double-precision real type conversion
INT_TO_LREAL(_E), DINT_TO_LREAL(_E)
5.1.9  
Word (signed), double word (signed) type  double-precision 
real type conversion
INT_TO_LREAL(_E), DINT_TO_LREAL(_E)
Function
Operation processing
(1) INT_TO_LREAL, INT_TO_LREAL_E
Converts word (signed) type data input to   into double-precision real type data, and 
outputs the operation result from  .
INT_TO_LREAL(_E)
DINT_TO_LREAL(_E)
_E: With EN/ENO
indicates any of the following 
functions.
INT_TO_LREAL
INT_TO_LREAL_E
DINT_TO_LREAL
DINT_TO_LREAL_E
Input argument,
EN:
Executing condition (TRUE: Execution, FALSE: Stop)
:Bit
s(_INT, _DINT): Input
:Word (signed), double word (signed)
Output argument,
ENO:
Execution result (TRUE: Normal, FALSE: Error)
:Bit
d:
Output
:Double-precision real
Universal
LCPU
Basic
High
performance
Process
Redundant
EN
ENO
d
s
INT_TO_LREAL_E
(EN, s, d);
ENO:=
Structured ladder/FBD
ST
INT_TO_LREAL_E
s
d
Word (signed) type
Double-precision real type
1234
1234.0
s
d
5.1 Type Conversion Functions
5.1.9 Word (signed), double word (signed) type 
double-precision real type conversion
5-23
5
APPLICATION 
FUNCTIONS
INT_TO_LREAL(_E), 
DINT_TO_LREAL(_E)
INT_TO_LREAL(_E), DINT_TO_LREAL(_E)
(2) DINT_TO_LREAL, DINT_TO_LREAL_E
Converts double word (signed) type data input to   into double-precision real type data, 
and outputs the operation result from  .
Operation result
(1) Function without EN/ENO
An operation is executed and the operation value is output from  .
(2) Function with EN/ENO
The following table shows the executing conditions and operation results.
*1: When FALSE is output from ENO, the data output from   is undefined.
In this case, create a program so that the data output from   is not used.
EN
ENO
TRUE (Operation execution)
TRUE
Operation output value
FALSE (Operation stop)
FALSE
*1
Undefined value
s
d
16543521
Double-precision real type
Double word (signed) type
16543521.0
s
d
d
d
d
d
5-24
5.1 Type Conversion Functions
5.1.9 Word (signed), double word (signed) type 
double-precision real type conversion
INT_TO_LREAL(_E), DINT_TO_LREAL(_E)
Operation Error
No operation error occurs in the execution of the INT_TO_LREAL(_E) and 
DINT_TO_LREAL(_E) functions.
Program Example
(1) The program which converts word (signed) type data input to   into double-precision real 
type data, and outputs the operation result from  .
(a) Function without EN/ENO (INT_TO_LREAL)
[Structured ladder/FBD]
[ST]
g_lreal1 := INT_TO_LREAL(g_int1);
(b) Function with EN/ENO (INT_TO_LREAL_E)
[Structured ladder/FBD]
[ST]
g_bool3 := INT_TO_LREAL_E(g_bool1, g_int1, g_lreal2);
(2) The program which converts double word (signed) type data input to   into double-
precision real type data, and outputs the operation result from  .
(a) Function without EN/ENO (DINT_TO_LREAL)
[Structured ladder/FBD]
[ST]
g_lreal1 := DINT_TO_LREAL(g_dint1);
s
d
s
d
5.1 Type Conversion Functions
5.1.10 Word (signed), double word (signed) type 
string type conversion
5-25
5
APPLICATION 
FUNCTIONS
INT_TO_STR(_E), 
DINT_TO_STR(_E)
INT_TO_STR(_E), DINT_TO_STR(_E)
5.1.10  
Word (signed), double word (signed) type  string type 
conversion
INT_TO_STR(_E), DINT_TO_STR(_E)
Function
Operation processing
(1) INT_TO_STR, INT_TO_STR_E
(a) Converts word (signed) type data input to   into string type data, and outputs the 
operation result from  .
(b) '20
H
(space)' is stored in 'Sign data' when the input value is positive; '2D
H
()' is stored 
when negative.
INT_TO_STR(_E)
DINT_TO_STR(_E)
_E: With EN/ENO
indicates any of the following 
functions.
INT_TO_STR
INT_TO_STR_E
DINT_TO_STR
DINT_TO_STR_E
Input argument,
EN:
Executing condition (TRUE: Execution, FALSE: Stop) :Bit
s(_INT, _DINT):Input
:Word (signed), double word (signed)
Output argument,
ENO:
Execution result (TRUE: Normal, FALSE: Error)
:Bit
d:
Output
:String(6) / (11)
Process
High
performance
Redundant
Universal
LCPU
Basic
EN
ENO
d
s
INT_TO_STR_E
(EN, s, d);
ENO:=
Structured ladder/FBD
ST
INT_TO_STR_E
s
d
Word (signed) type
ASCII code of hundreds place
ASCII code of thousands place
ASCII code of units place ASCII code of tens place
00
H
ASCII code of ten-thousands place
Sign data
2nd word
3rd word
4th word
String 1st word
High-order byte
Low-order byte
When SM701 (signal for switching the number of output characters) is OFF,
"00
H
" is stored.
s
d
5-26
5.1 Type Conversion Functions
5.1.10 Word (signed), double word (signed) type 
string type conversion
INT_TO_STR(_E), DINT_TO_STR(_E)
(c) If the number of significant figures is less, '20
H
(space)' is stored to high-order digits.
(Example) Inputting 123
(d) When SM701 (signal for switching the number of output characters) is OFF, "00
H
" is 
stored to the end of the character string.
(2) DINT_TO_STR, DINT_TO_STR_E
(a) Converts double word (signed) type data input to   into string type data, and outputs 
the operation result from  .
(b) '20
H
(space)' is stored in 'Sign data' when the input value is positive; '2D
H
(-)' is stored 
when negative
(c) If the number of significant figures is less, '20
H
(space)' is stored to high-order digits.
(Example) Inputting 123456
(d) When SM701 (signal for switching the number of output characters) is OFF, "00
H
" is 
stored to the end of the character string.
Word (signed) type
31
H
(1)
-123
20
H
(space)
33
H
(3)
32
H
(2)
00
H
20
H
(space)
2D
H
(-)
2nd word
3rd word
4th word
String 1st word
High-order byte
Low-order byte
s
d
s
d
Double word (signed) type
ASCII code of ten-millions place
ASCII code of hundred-millions place  
ASCII code of hundred-thousands place 
ASCII code of millions place 
ASCII code of thousands place
ASCII code of ten-thousands place
ASCII code of tens place
ASCII code of hundreds place
00
H
ASCII code of units place
2nd word
3rd word
4th word
5th word
6th word
String 1st word
High-order byte
Low-order byte
ASCII code of billions place 
Sign data
When SM701 (signal for switching the number of output characters) is OFF,
"00
H
" is stored.
s
d
Double word (signed) type
20
(space)
-123456
20
(space)
31
(1)
20
(space)
33
(3)
32
(2)
35
(5)
34
(4)
00
H
36
(6)
20
(space)
2D
( - )
5th word
6th word
High-order byte
Low-order byte
2nd word
3rd word
4th word
String 1st word
s
d
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