Siemens SINUMERIK 840C Installation Instructions Manual page 294

01.99
NC MD 7
5051
Default value: All 0
By setting the relevant NC MD bit, entries and modifications through the NC operator panel
can be prevented with the keyswitch.
Bit 0 Cycles setting data
Active:
NC MD 7
F62 pro-
Prog. Pre-
gramming
5052
decod. with
(as from
G171/G172
SW 6.3)
Bit 7 Bit 7=0 F62 programming not active.
Bit 7=1 F62 programming active.
Default setting: 0
Active:
Bit 6 With this, the function "Progr. predecod. with G171/G172 is enabled (see
Section Functional Description).
Bit 1 Bit 1=0 Cylindrical interpolation with 2 axes
Bit 1=1 Cylindrical interpolation with 4 axes activated
Cylindrical interpolation can be activated for up to four axes, cylindrical interpolation remains
active. One limitation of this function is that the cylindrical interpolation axis must be
programmed as the 1st or 2nd axis in a block. The axes cannot therefore be programmed in
any order, nor can a circle be programmed without including the cylindrical interpolation axis. If
more than five axes are programmed in a block or if an axis other than the 1st or 2nd axis is
programmed as the cylindrical interpolation axis, alarm 2059 is output.
Default value: 0 for T and M controls
Bit 0 Bit 0=0 Automatic generation of G68 for initial programming of rotary axes.
Bit 0=1 No automatic generation of G68 for initial programming of rotary axes.
With this MD the user can define how the control is to behave on initial programming of the
axis by programming G68, G90 or G91. On a block search, the automatic generation of G68 is
retained because the user cannot influence by programming.
_______
1) As from SW 5
©
Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
Bit No.
6 5 4
At once
Bit No.
6 5 4
MD immediately active
6FC5197- AA50
6.6.1 General MD bits (general bits)
3 2 1
3 2 1
Cylindrical
interpolation
with 4 axes
(as from
SW 6)
0
Cycle
setting data
0
No
automat.
gener. of
G68 for rot.
1)
axes
6–109