Siemens SINUMERIK 828D Commissioning Manual page 1082

Programming commands
6.3 Functions
● Remove spaces (from left or from the right)
● Insert values or strings with formatting identifiers
LEN function: Length of a string
Syntax:
Description:
Parameters:
Example
DEF VAR01
DEF VAR02
LOAD
VAR01="HALLO"
VAR02=LEN(VAR01)
END_LOAD
INSTR function: Search for character in string
Syntax:
Description:
Parameters:
Example
DEF VAR01
DEF VAR02
LOAD
152
(string | varname)
LEN
Determines the number of characters in a string
string Every valid string expression. NULL is output if string is
empty.
varname Any valid declared variable name
Only one of the two parameters is allowed.
; Result = 5
(Start, String1, String2 [,Direction])
INSTR
Searches for characters
Start Starting position for searching for string1 in string2. En‐
ter 0 to start searching at the beginning of string2.
String1 Character that is being searched for.
String2 Character string in which the search is being made.
Direction (optional) Direction in which the search is being made.
0: From left to right (default setting)
1: From right to left
0 is returned if string1 does not occur in string2.
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Programming Manual, 10/2015, 6FC5397-3DP40-5BA3