Siemens SINUMERIK 840D

9
Path Traversing Behavior 08.97
9.3 Curve tables
,
CTABDEF
,
CTABEND
,
CTAB
,
CTABINV
9
840D
NCU 571
840D
NCU 572
NCU 573
810D 840Di

Siemens AG 2000. All rights reserved
9-316
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
Additional notes
With the system variable $P_CTABDEF it is possible
to query from inside a part program whether a curve
table definition is active.
The part program section can be used as a curve
table definition after excluding the statements and
therefore as a real part program again.
Programming example
A program section is to be used unchanged for
defining a curve table. The command for preprocess
stop STOPRE can remain and is active again
immediately as soon as the program section is not
used for table definition and CTABDEF and
CTABEND have been removed:
CTABDEF(Y,X,1,1)
…
…
IF NOT ($P_CTABDEF)
STOPRE
ENDIF
…
…
CTABEND
Curve tables and various operating states
During active block search, calculation of curve
tables is not possible. If the target block is within the
definition of a curve table, an alarm is output when
CTABEND is reached.