Siemens Sinumerik 840D sl Programming Manual page 504

Tables
17.7 Predefined functions
Arithmetic
Identifier Return value
MAXVAL REAL
BOUND REAL: Check
status
Note:
The arithmetic functions can also be programmed in synchronized actions. These arithmetic functions are calculated and
evaluated in the main run. The synchronized action parameter $AC_PARAM[<n>] can also be used for calculations and as
buffer.
INT: functions
Identifier Return value
ISNUMBER BOOL
NUMBER REAL
TOUPPER STRING
TOLOWER STRING
STRLEN INT
INDEX INT
RINDEX INT
MINDEX INT
SUBSTR STRING
SPRINT STRING
504
Parameter
1. 2.
REAL REAL
REAL: Minimum REAL: Maximum REAL:
Parameter
1. 2.
STRING
STRING
STRING
STRING
STRING
STRING CHAR
STRING CHAR
STRING STRING
STRING INT
STRING
3.
Checking varia‐
ble
Explanation
3.
Checks whether the input string can be con‐
verted to a number.
Converts the input string into a number.
Converts all alphabetic characters in the input
string to upper case.
Converts all alphabetic characters in the input
string to lower case.
The result is the length of the input string up to
the end of the string (0).
Searches for the character (2nd parameter) in
the input string (1st parameter).
The reply gives the place, at which the charac‐
ter was first found. The search is from left to
right. The 1st character in the string has the
index 0.
Searches for the character (2nd parameter) in
the input string (1st parameter).
The reply gives the place, at which the charac‐
ter was first found. The search is from right to
left. The 1st character in the string has the in‐
dex 0.
Searches for one of the characters specified
in the 2nd parameter in the input string (1st
parameter).
The place where one of the characters was
first found is output. The search is from left to
right. The 1st character in the string has the
index 0.
INT Returns the substring of the input string (1st
parameter), defined by the start character (2nd
parameter) and number of characters (3rd pa‐
rameter).
Returns the input string (1st parameter).
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Explanation
Determines the larger value of
two variables
Checks whether the variable
value lies within the defined
min/max value range
Fundamentals