HEIDENHAIN TNC 640 (34059x-05) - Manual (Page 307)

If-then decisions with Q parameters 9.6
9
TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 1/2015
307
9.6 If-then decisions with Q parameters
Application
The TNC can make logical if-then decisions by comparing a Q
parameter with another Q parameter or with a numerical value.
If the condition is fulfilled, the TNC continues the program at the
label that is programmed after the condition (for information on
labels, see "Labeling Subprograms and Program Section Repeats",
page 280). If it is not fulfilled, the TNC continues with the next
block.
To call another program as a subprogram, enter a
PGM CALL
program call after the block with the target label.
Unconditional jumps
An unconditional jump is programmed by entering a conditional
jump whose condition is always true. Example:
FN 9: IF+10 EQU+10 GOTO LBL1
Abbreviations used:
IF : If
EQU : Equal to
NE : Not equal to
GT : Greater than
LT : Less than
GOTO : Go to
UNDEFINED : Undefined
DEFINED : Defined