HEIDENHAIN TNC 640 (34059x-04) ISO programming - Manual (Page 271)

If-then decisions with Q parameters 9.5
9
TNC 640 | User's Manual for DIN/ISO Programming | 3/2014
271
9.5 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 248). If it is not fulfilled, the TNC continues with the next
block.
To call another program as a subprogram, enter a
% 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:
D09 P01 +10 P02 +10 P03 1 *
Programming if-then decisions
Press the JUMP soft key to call the if-then conditions. The TNC
then displays the following soft keys:
Function Soft key
D09: IF EQUAL, JUMP
e.g.
D09 P01 +Q1 P02 +Q3 P03 “UPCAN25“ *
If both values or parameters are equal, jump to
specified label
D10: IF NOT EQUAL TO, JUMP
e.g.
D10 P01 +10 P02 -Q5 P03 10 *
If both values or parameters are not equal, jump
to specified label
D11: IF GREATER, JUMP
e.g.
D11 P01 +Q1 P02 +10 P03 5 *
If the first value or parameter is greater than the
second value or parameter, jump to specified
label
D12: IF SMALLER, JUMP
e.g.
D12 P01 +Q5 P02 +0 P03 “ANYNAME“ *
If the first value or parameter is smaller than the
second value or parameter, jump to specified
label