Siemens sinumerik 840d Programming Manual page 52

Flexible NC Programming
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1.10 String operations
840D 840D
NCU 571 NCU 572
NCU 573
INDEX searches from beginning of first parameter for character specified as second
parameter.
RINDEX searches from end of first parameter for character specified as second parameter.
MINDEX corresponds to INDEX function except that a list of characters is transferred (as
string). The index of the first character found in this list is returned.
MATCH looks for a string within a string.
Strings can therefore be broken down according to
certain criteria, i.e. at positions with blanks or path
separator (oblique) ("/").
Programming example
Example of how to break down an input into path
and module name:
DEF INT PATHIDX, PROGIDX
DEF STRING[26] INPUT
DEF INT LISTIDX
INPUT = "/_N_MPF_DIR/_N_EXECUTE_MPF"
LISTIDX = MINDEX (INPUT, "M,N,O,P")
PATHIDX = INDEX (INPUT, "/") +1
PROGIDX = RINDEX (INPUT, "/") +1
VARIABLE = SUBSTR (INPUT, PATHIDX,
PROGIDX-PATHIDX-1)
VARIABLE = SUBSTR (INPUT, PROGIDX)
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FM-NC 810D 840Di
+ 1
3 is returned as the value in LISTIDX;
because "N" is the first character in
parameter INPUT (starting at beginning
of selection list).
; PATHIDX is therefore 1
; PROGIDX = is therefore 12
;Using the SUBSTR function introduced
in the next section, the variable INPUT
can be broken down into "Path" and
"Module":
Then supplies "_N_MPF_DIR"
Then supplies "_N_EXECUTE_MPF"
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) − 04.00 Edition
04.00
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