Siemens SINUMERIK 840C Installation Instructions Manual page 331

6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.6.4 Axis-specific MD bits 1 (axial bits 1)
NC MD 7
564*
Axis exists Axis type
Default value
MD
5640 1000 0010
5641 1000 0010
5642
5643
5644
.
.
.
5669
840T: Bit 7 in MD 5640 and 5641 must be "1".
840M: Bit 7 in MD 5640, 5641 and 5642 must be "1".
Bit 7 When this bit is set, the axis is displayed on the monitor screen and the
position controller and measuring circuit monitor are activated. PLC MD 6016
and 6017 must be observed as regards the interface.
If this bit is set the axis can be used as an auxiliary axis. Interpolation is then
not permissible.
Active On:
Bit 6 Fictitious axes are required for coordinate transformation (see NC MD 5060
to 5069). Fictitious axes have no position controller (NC MD 200* irrelevant)
and require no measuring circuit. Fictitious axes must be linear axes.
Active On:
Note:
SW4: With a fictitious axis, only 14 real axes are possible. With reference to MD 2000.
Bit 5 The axis is declared as rotary axis. Position control thus begins in degrees,
and G70/G71 is disabled for rotary axis programming. For further details on
rotary axes, also see Section entitled "Functional Descriptions".
Active On:
Bit 4 Bit 4 ("Division axis") declares a linear or rotary axis to be a division axis,
and thus activates NC MD 1104*, 1108*, 1112* and 564* bit 3. See Section
entitled "Functional Descriptions".
Active:
6–146
Bit No.
6 5 4
Division
Rotary axis
axis
T M
1000 0010
1000 0010
0 1000 0010
0 0
0 0
. .
. .
. .
0 0
POWER ON
POWER ON
NC STOP
At once
©
Siemens AG 1992 All Rights Reserved
3 2 1
Actual
Actual
values Setpoint
value sign
division- sign change
change
related
6FC5197- AA50
SINUMERIK 840C (IA)
08.96
0
Ref. point
appr. in
neg.
direction