Meaning
IF: Introduces the conditional statement or branch.
ELSE: Introduces the alternative program block.
ENDIF: Marks the end of the conditional statement or branch.
<condition>: Logical expression that is evaluated as TRUE or FALSE.
Example: Tool change subprogram
Program code Comment
PROC L6 Tool change routine
N500 DEF INT TNR_AKTUELL Variable for active T number
N510 DEF INT TNR_VORWAHL Variable for preselected T number
Determine current tool
N520 STOPRE
N530 IF $P_ISTEST In the program test mode ...
N540 TNR_AKTUELL = $P_TOOLNO ... the "current" tool is read
from the program context.
N550 ELSE Otherwise ...
N560 TNR_AKTUELL = $TC_MPP6[9998,1] ... the tool of the spindle is
read-out.
N570 ENDIF
N580 GETSELT(TNR_VORWAHL) Read the T number of the pre-se-
lected tool in the spindle.
N590 IF TNR_AKTUELL <> TNR_VORWAHL If the pre-selected tool is
still not the current tool,
then ...
N600 G0 G40 G60 G90 SUPA X450 Y300 Z300 D0 ... Approach tool change posi-
tion ...
N610 M206 ... and perform a tool change.
N620 ENDIF
N630 M17
3.1.7.2 Continuous program loop (LOOP, ENDLOOP)
Endless loops are used in endless programs. At the end of the loop, there is always a branch
back to the beginning.
Syntax
LOOP
...
ENDLOOP
Work preparation
3.1 Flexible NC programming
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0 477
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