Siemens SINUMERIK 840C - Manual (Page 279)

6 NC Machine Data (NC MD), NC Setting Data (NC SD) 09.01
6.6.1 General MD bits (general bits)
Note:
If the MD bit is not set, the last function to be programmed in the block is
active.
Example:
added
incrementally to
previous G58 X...
value new absolute
entry of Y value
(Y = 100)
G58 X... G91 X50... G90 Y100
Example: Mixed programming G90/91 in one block
N5
X
Y
100
50 60 100
130
60
N10
N15
N5 G01 X50 Y60 F500 LF
N10 G91 X50 Y40 LF
N15 G90 X60 G91 Y30 LF
N20 M30 LF
Bit 3 The tool offset can be extended by 2 additional tool offset parameters
(P8, P9) (see also Programming Guide).
Bit 2 Bit 2 = 0 SUBROUTINE END (M17) is sent to the PLC as an M function.
Bit 2 = 1 SUBROUTINE END is only active NC internal
(subroutine return jump fast).
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SINUMERIK 840C (IA)