Siemens SINUMERIK 840D sl Function Manual page 1660
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Also See for SINUMERIK 840D sl:
- Function manual (2184 pages) ,
- Programming manual (1334 pages) ,
- Commissioning manual (1102 pages)
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Z1: NC/PLC interface signals
19.12 Feeds (V1)
DB21, ...
DBX6.7
Feedrate override active
Edge evaluation: No
Signal state 1 or
The feedrate override between 0 and a maximum of 200% entered at the PLC interface is active for
edge change
the path feedrate and therefore automatically for the related axes.
0 → 1
In JOG mode, the feedrate override acts directly on the axes.
The override factor is entered using the machine data:
MD12020 $MN_OVR_FEED_IS_GRAY_CODE (path feedrate override factor, gray-coded)
and
MD12030 $MN_OVR_FACTOR_FEEDRATE [n] (evaluation of the path feedrate override switch)
Signal state 0 or
The feedrate override entered at the PLC interface is ignored.
edge change
When the feedrate override is inactive, the NC always uses 100% as the internal override factor.
1 → 0
Exceptions are the zero setting for a binary interface and the 1st switch setting for a Gray-coded
interface. In these cases, the override factors entered in the PLC interface are used. With a binary
interface, the override factor = 0. With a gray-coded interface, the value entered in the machine data
for the 1st switch setting is output as the override value.
Application exam‐
The override value is generally selected using the feedrate override switch on the machine control
ple(s)
panel.
Using the interface signal:
DB21, ... DBX6.7 (feedrate override active),
the feedrate override switch can be enabled from the PLC user program while commissioning a new
NC program, e.g. using the key-operated switch.
Special cases,
The feedrate override is inactive when G33, G63, G331, G332 are active.
errors, ......
Corresponding to ...
DB21, ... DBB4 (feedrate override)
DB21, ...
DBX12.3, DBX16.3,
Feed stop (Geometry axis 1 to 3)
DBX20.3
Edge evaluation: No
Signal state 1 or
The signal is only active in JOG mode.
edge change
The signal stops the feed of the geometry axis. This signal brings all traversing axes to a standstill
0 → 1
with controlled braking (ramp stop). No alarm is output.
The position control is retained, i.e. the following error is eliminated.
If, for a geometry axis, a travel request is issued with an active "feed stop", the request is kept. This
queued travel request is executed immediately after the "feed stop" is canceled.
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 canceled,
1 → 0
this is executed immediately.
1660
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions
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