Setting The Gi Machine Data And The Necessary Plc Signals - Siemens SINUMERIK 840C Installation Instructions Manual

12.93
-1
K =33.33 s V =0.66
v 1
1
1-0.66
T = –––––––+5 ms=15 ms
SUBS
33.33
1
-1
K =33.33s V =0.66
v 2
2
1-0.66
T = –––––––+5 ms=15 ms
SUBS
33.33
2
-1
K =25.00s V =0.66
v 3
2
1-0.66
T = –––––––+7 ms=20.2 ms
SUBS
25
3
T =20.2 - 15.0=5.2 ms
X
1
T =20.2 - 15.0=5.2 ms
X
2
T =20.2 - 20.2=0.0 ms
X
3

Setting the GI machine data and the necessary PLC signals

In order to be able to configure a gearbox link via the input display or the NC part program and
to enter the synchronous positions and link factors, you must set the following NC MD bits for
the following drive to "1":
• NC MD 1844*/525* bit0
• NC MD 1844*/525* bit1
• NC MD 1844*/525* bit2
• NC MD 1844*/525* bit3
For inputs via the input display, you must set NC MD 5006, bit 4 to "0".
As soon as you wish to traverse the following drive with overlay (e.g. for on-the-fly
synchronization), the PLC signal ENABLE FOLLOWING AXIS/SPINDLE OVERLAY (DB29/31)
must be set to "1".
After start-up, the bits must be set in accordance with the machine
© Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
T =5 ms
SYM
1
T =5 ms
SYM
2
T =7 ms
SYM
3
Axis/spindle may be FD/FS
Reconfiguration permissible
Switchover of link factor permissible
Overwriting of positions permissible
philosophy of the manufacturer.
6FC5197- AA50
12 Functional Descriptions
12.18.13 Start-up
12–161