
21 Terms and Abbreviations
01.93
m, n, x
These letters are often used in tables as block indices.
They indicate an address offset that depends on the axis
or spindle number, for example. The values for the
applicable address offsets are generally stated underneath
the relevant table or at the end of the Section concerned.
M00
Miscellaneous function in the part program; program stop
(unconditional)
M01
Miscellaneous function in the part program; optional stop
(conditional)
M02
Miscellaneous function in the part program; end of
program
M03
Miscellaneous function in the part program; spindle
rotation clockwise
M04
Miscellaneous function in the part program; spindle
rotation counter-clockwise
M05
Miscellaneous function in the part program; spindle off
(without orientation)
M17
End of subroutine
M19
Miscellaneous function in the part program; oriented
spindle stop (M19 can also effect an oriented spindle stop
over several revolutions; incremental positioning)
M30
End of program
M36
Feedrate ratio 1:100
M37
Feedrate 1:1 (initial setting)
Main block
Program block in the NC part program. The program
blocks in the part program are classified hierarchically as
main blocks and subblocks.
MD
Abbreviation for machine data
MD 123*
General notation for machine data available separately for
each axis or spindle, for example. The asterisk " * "
stands for the number of the axis or spindle concerned.
MDA
NC mode
Measuring circuit
Unit in the NC area; obtains partial setpoints from the
interpolator and supplies the interpolator with partial actual
values for one drive (axis or spindle)
Menu
Function or data-related structure of screen representation
Mini EU
Small version of an expansion unit
Mode
Abbreviation for operating mode
Mode group
Combination of NC channels that always operate in the
same mode (also see Section 1)
21–6
© Siemens AG 1991 All Rights Reserved 6ZB5 410-0HE04
SINUMERIK 880 (PJ)