Siemens SINUMERIK 840D sl Function Manual page 916

Z2: NC/PLC interface signals
19.3 Manual and Handwheel Travel (H1)
DB31, ...
DBB4
Bit 0-2 Activate handwheel (1 to 3)
Application exam‐ The PLC user program can use this interface signal to disable the influence of turning the handwheel
ple(s) on the axis.
Corresponding to ... DB31, ... DBX64.0 to DBX64.2 (Handwheel active)
DB31, ...
DBX4.4 Traversing key lock
Edge evaluation: No
Signal state 1 or edge The traverse keys plus and minus have no effect on the machine axes in question. It is thus not
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 edge The plus and minus traverse keys are enabled.
change 1 → 0
Application exam‐ It is thus possible, depending on the operating mode, to disable manual traverse of the machine axis
ple(s) 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 edge If together with interface signal:
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:
● Continuous jogging
● Incremental jogging
If rapid traverse override is active, the velocity can be modified with the rapid traverse override switch.
Signal state 0 or edge The machine axis traverses with the defined JOG velocity:
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)
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Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions