Mitsubishi Electric MELSEC iQ-R Series - Chapter 32 String Functions; Detecting a String Length

1944
32 STRING FUNCTIONS
32.1 Detecting a String Length
32 STRING FUNCTIONS
32.1 Detecting a String Length
LEN(_E)
These functions detect and output the length of the string input.
Setting data
■Description, type, data type
Processing details
■Operation processing
• These functions detect the length of the string input to (s), and output the length from (d).
• Input a STRING data type value to (s) within the range of 0 to 255 bytes.
Ladder, FBD/LD Structured text
[Without EN/ENO] [With EN/ENO] [Without EN/ENO]
d:=LEN(s);
[With EN/ENO]
d:=LEN_E(EN,ENO,s);
Argument Description Type Data type
EN Execution condition (TRUE: Executed, FALSE: Not executed) Input variable BOOL
s (IN) Input Input variable ANYSTRING_SINGLE
ENO Output status (TRUE: Normal, FALSE: Abnormal) Output variable BOOL
d Output Output variable INT
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant) (Process)
sd
EN ENO
ds
(s)
(d)
·
+0
+2
+1
STRING
INT
Lower byteUpper byte
ASCII code (1st character)ASCII code (2nd character)
00H (Null character (end of string))
ASCII code (5th character)
ASCII code ('n'th character)
ASCII code (6th character)
ASCII code (3rd character)ASCII code (4th character)
String length