Advanced controlling of program loops
Aborting program loops with BREAK
Application
You can use the BREAK NC function to abort a program loop (e.g., if a certain machine or tool status occurs).
Description of function
If the control executes the BREAK NC function, it aborts the program loop. The control skips the NC blocks until the footer and then executes the rest of the NC program.
Input
NC programs contained in this User's Manual are suggestions for solutions. The NC programs or individual NC blocks must be adapted before being used on a machine.
Change the following contents as needed:
- Tools
- Cutting parameters
- Feed rates
- Clearance height or safe position
- Machine-specific positions (e.g., with M91)
- Paths of program calls
Some NC programs depend on the machine kinematics. Adapt these NC programs to your machine kinematics before the first test run.
In addition, test the NC programs using the simulation before the actual program run.
With a program test you determine whether the NC program can be used with the available software options, the active machine kinematics and the current machine configuration.
11 FOR Q50 = 4 TO 10 | ; Header of the FOR loop |
* - ... | |
15 IF Q182 == +1 | ; Workpiece status: scrap after probing |
16 BREAK | ; If Q182 contains the value 1, the control will execute this NC block contains and then abort the program loop |
17 END IF | |
* - ... | |
21 END FOR | ; Footer of the FOR loop |
To navigate to this function:
Insert NC function All functions FN Program section repeat BREAK
The NC function includes the following syntax elements:
Syntax element | Meaning |
---|---|
BREAK | Syntax initiator for aborting the program loop |
Note
Program a BREAK only in combination with a case analysis. That way the control will abort the program loop only in the defined case.
Canceling program loops with CONTINUE
Application
You can use the CONTINUE NC function to skip the current repetition of a program loop. The control then continues with the subsequent program loop.
Description of function
If the control executes the CONTINUE NC function, it cancels the current loop repetition. The control skips the NC blocks up to the footer, ignoring the rest of the program loop. The control then executes the next loop repetition.
Input
NC programs contained in this User's Manual are suggestions for solutions. The NC programs or individual NC blocks must be adapted before being used on a machine.
Change the following contents as needed:
- Tools
- Cutting parameters
- Feed rates
- Clearance height or safe position
- Machine-specific positions (e.g., with M91)
- Paths of program calls
Some NC programs depend on the machine kinematics. Adapt these NC programs to your machine kinematics before the first test run.
In addition, test the NC programs using the simulation before the actual program run.
With a program test you determine whether the NC program can be used with the available software options, the active machine kinematics and the current machine configuration.
11 FOR Q50 = 4 TO 10 | ; Header of the FOR loop |
* - ... | |
15 IF Q182 == +1 | ; Workpiece status: scrap after probing |
16 CONTINUE | ; If Q182 contains the value 1, the control will execute this NC block contains and then cancel the current loop repetition |
17 END IF | |
* - ... | |
21 END FOR | ; Footer of the FOR loop |
To navigate to this function:
Insert NC function All functions FN Program section repeat CONTINUE
The NC function includes the following syntax elements:
Syntax element | Meaning |
---|---|
CONTINUE | Syntax initiator for canceling a loop repetition |