Siemens SINUMERIK 840Di Function Manual page 2004
Basic machine
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Also See for SINUMERIK 840Di:
- Diagnostic manual (880 pages) ,
- Manual (552 pages) ,
- System overview (55 pages)
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Detailed Description
2.16 Feeds (V1)
DB21, ...
DBX12.3, DBX16.3,
Feed stop (geometry axis 1 to 3)
DBX20.3
Signal state 0 or
The feed is enabled for the geometry axis.
edge change
If, for the geometry axis, a travel request ("Travel command") is active when the "Feed stop" is
1 → 0
cancelled, this is executed immediately.
DB21, ...
DBX24.6
Dry run feed rate selected
Edge evaluation: no
Signal state 1 or
Dry run feed rate is selected.
edge change
Instead of the programmed feed rate, the dry run feed rate entered in setting data:
0 → 1
SD42100 $SC_DRY_RUN_FEED
is active.
When activated from the operator panel, the dry run feed signal is automatically entered in the PLC
interface and transmitted by the PLC basic program to the PLC interface signal:
DB21, ... DBX0.6 (active dry run feed).
Signal state 0 or
Dry run feed rate is not selected.
edge change
The programmed feed rate is active.
1 → 0
Corresponding to ....
DB21, ... DBX0.6 (activate dry run feed)
SD42100 $SC_DRY_RUN_FEED (dry run feed rate)
DB21, ...
DBX25.3
Feed rate override selected for rapid traverse
Edge evaluation: no
Signal state 1 or
The feed rate override switch should also be active as rapid traverse override switch.
edge change
Override values above 100% are limited to the maximum value for 100% rapid traverse override.
0 → 1
The interface signal:
DB21, ... DBX25.3 (feed rate override for rapid traverse selected)
is automatically entered into the PLC interface from the operator panel
and transferred from the PLC basic program to the PLC interface signal:
DB21, ... DBX6.6 (rapid traverse override active).
Further, the interface signal:
DB21, ... DBB4 (feed rate override)
is copied from the PLC basic program to the interface signal:
DB21, ... DBB5 (rapid traverse override).
Signal state 0 or
The feed rate override switch should not be activated as rapid traverse override switch.
edge change
1 → 0
Application
The signal is used when no separate rapid traverse override switch is available.
example(s)
2-140
Signal(s) updated: cyclic
Signal(s) updated: cyclic
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
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