Siemens SINUMERIK 840D sl Programming Manual page 231

Example 2: Macro definitions in a macro file
Program code
DEFINE M6 AS L6
DEFINE G81 AS DRILL(81)
DEFINE G33 AS M333 G333
Example 3: External macro file
The macro file must be downloaded into the NC after reading-in the external macro file into
the control. Only then can macros be used in the NC program.
Program code
%_N_UMAC_DEF
;$PATH=/_N_DEF_DIR
DEFINE PI AS 3.14
DEFINE TC1 AS M3 S1000
DEFINE M13 AS M3 M7
DEFINE M14 AS M4 M7
DEFINE M15 AS M5 M9
DEFINE M6 AS L6
DEFINE G80 AS MCALL
M30
Job Planning
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
1.26 Macro technique (DEFINE ... AS)
Comments
; A subprogram is called at tool change to handle
the necessary data transfer. The actual M
function is output in the subprogram (e.g.,
M106).
; Emulation of the DIN-G function.
; During thread cutting synchronization is
requested with the PLC. The original G function
G33 was renamed to G333 by machine data so that
the programming is identical for the user.
Comments
; Customer-specific macros
; Spindle clockwise, coolant on
; Spindle counterclockwise, coolant on
; Spindle stop, coolant off
; Call tool change program
; Deselect drilling cycle
Flexible NC programming
231