Mitsubishi MELSEC iQ-F FX5 series

746
15 TYPE CONVERSION FUNCTIONS
15.44 Converting STRING to BOOL
15.44 Converting STRING to BOOL
STRING_TO_BOOL(_E)
These functions convert STRING type data to BOOL type data.
Setting data
■Descriptions, types, and data types
Processing details
■Operation processing
• These functions convert the STRING type (in the decimal format or exponent format) data input to (s) to BOOL type data
and output from (d).
■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.
*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.
Ladder diagram Structured text
[Without EN/ENO] [With EN/ENO] [Without EN/ENO]
d:=STRING_TO_ BOOL(s);
[With EN/ENO]
d:=STRING_TO_ BOOL_E(EN,ENO,s);
Argument Description Type Data type
EN Execution condition (TRUE: Execution, FALSE: Stop) Input variable BOOL
s Input Input variable STRING(1)
ENO Output status (TRUE: Normal, FALSE: Abnormal) Output variable BOOL
d Output Output variable BOOL
Execution condition Operation result
EN ENO (d)
TRUE (Executes operation) TRUE Operation output value
FALSE (Stops operation) FALSE
*1
Indefinite value
sd
EN ENO
ds
STRING
'1'
'0'
BOOL
TRUE
FALSE
(s) (d)