Special functions
9.1 Auxiliary function outputs
Fundamentals
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
413
Caution
Function outputs in continuous-path mode
Function outputs before the traversing movements interrupt continuous-path mode
(G64/G641) and generate an exact stop for the previous block.
Function outputs after the traversing movements interrupt continuous-path mode
(G64/G641) and generate an exact stop for the current block.
Important:A wait for an outstanding acknowledgment signal from the PLC can also cause an
interruption to continuous-path mode, e.g., M instruction sequences in blocks with extremely
short path lengths.
9.1.1 M functions
Function
M functions can trigger, for example, switching operations such as "Coolant ON/OFF" and
other operations on the machine. Permanent functions have already been assigned to some
of the M functions by the control manufacturer (see list of predefined M functions).
Programming
M... Possible values. 0 to 9999 9999 (max. INT value), integer
Parameters
List of predefined M functions
M0*
Programmed stop 1
M1*
Optional stop
M2*
End of main program with return to beginning of program
M30*
End of program, same effect as M2
M17*
End of subprogram
M3
Spindle clockwise
M4
Spindle counterclockwise
M5
Spindle stop
M6
Tool change (default setting)
M70
Spindle is switched to axis mode
M40
Automatic gear change
M41
Gear stage 1
M42
Gear stage 2
M43
Gear stage 3
M44
Gear stage 4
M45
Gear stage 5
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