3. Macro programming
Rosetta CNC supports Macro programming (following Fanuc Macro B style).
Your G-code programs or sub-programs can include a few non G-code commands that use:
- Custom Macro calls (subroutines with arguments)
Subroutines, Macros and WHILE statements can be nested up to 100 times.
The following example provide an overview of the supported macro programming features.
F5000 G0 x0 y0 z0 G1 x100 ; G-code subroutines support ; To invoke a subroutine type "M98 P<subroutine id> L<repetitions>". ; The following line invoke the subroutine with id 1 for 2 times. M98 P1 L2 ; Numbered external G-code subroutine call M98 P101 L2 ; Named external G-code subroutine call M98 P"named_sub.ngc" L2 #1 = 10 #2 = 20 #3 = 30 #4 = -10 ; Macro call support: ; - The arguments are loaded in the correspondent parameters. ; - When the call is finished the parameters 1-33 are restored to the value ; they had before the call ; A = #1 ; B = #2 ; C = #3 G65 P2 A3 B5 C2 IF [#4 EQ -10] THEN M109 P"Parameter 4 is restored to #4 when the macro is finished" G65 P"named_sub.ngc" A3 B5 C2 ; RosettaCnC supports user defined M codes with arguments [M200 - M299] M200 A10 B5 C7.0 ; "CALL" can be used as a more readable alias for G65. CALL P"local_named_sub" M2 ( Program End) ; RosettaCnC supports G-code subroutines: ( The following lines declare a subroutine with id 1 ) O1 ( Subroutine body that contains G-code instructions ) G0 x0 y0 z0 G0 x0 y0 z50 G0 x0 y0 z0 ( The following line define the end of the subroutine ) M99 O2 ( Subroutine body can access and modify local parameters ) #4 = [[#1 + #2] * #3] IF [#5 EQ #0] THEN M109 P"Parameter 5 has not been set when the macro has been called" IF [#4 EQ 16] THEN M109 P"Parameter 4 is equal to #4" ( The following line define the end of the subroutine ) M99 ; Local named subroutines can be defined as follows, where: ; - "SUB" and "O" can be both used for the subroutine declaration ; - "ENDSUB" and "M99" can be both used for subroutine end ; - "RETURN" and "M99" can be both used to return from a subroutine SUB "local_named_sub" G1 Y100 IF [#1 EQ 0] THEN1 RETURN END1 ENDSUB