Siemens SINUMERIK 840D sl Function Manual page 1040
Extended functions
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NC/PLC interface signals (Z2)
19.4 Manual and handwheel travel
DB31, ...
DBX4.4
Traverse key disable
Edge evaluation: No
Signal state 1 or
The traverse keys plus and minus have no effect on the machine axes in question. It is thus not
edge change 0 → 1
possible to traverse the machine axis in JOG with the traverse keys on the machine control panel.
If the traverse key disable is activated during a traverse movement, the machine axis is stopped.
Signal state 0 or
The plus and minus traverse keys are enabled.
edge change 1 → 0
Application
It is thus possible, depending on the operating mode, to disable manual traverse of the machine
example(s)
axis in JOG mode with the traverse keys from the PLC user program.
Corresponding to ....
DB31, ... DBX4.7 and/or DBX4.6 (traversing key plus and traversing key minus)
DB31, ...
DBX4.5
Rapid traverse override
Edge evaluation: No
Signal state 1 or
If together with interface signal:
edge change 0 → 1
DB31, ... DBX4.0, 4.1, 4.2 (traverse key plus or traverse key minus)
the PLC interface signal:
DB31, ... DBX4.5 (Rapid traverse override)
is sent, then the corresponding machine axis is operating with rapid traverse.
The rapid traverse feedrate is defined in machine data:
MD32010 $MA_JOG_VELO_RAPID (Conventional rapid traverse).
The rapid traverse override is effective in the JOG mode for the following versions:
•
•
If rapid traverse override is active, the velocity can be modified with the rapid traverse override
switch.
Signal state 0 or
The machine axis traverses with the defined JOG velocity:
edge change 1 → 0
SD41110 $SN_JOG_SET_VELO (Axis velocity with JOG)
or
MD32020 $MA_JOG_VELO (Conventional axis velocity).
Signal irrelevant for
Operating modes AUTOMATIC and MDA
...
Reference point approach (JOG mode)
Corresponding to ....
DB31, ... DBX4.7 and/or DBX4.6 (traversing key plus and traversing key minus)
DB31, ... DBB0 (axial feed/spindle override)
1040
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Continuous jogging
Incremental jogging
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions
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