Siemens SINUMERIK 840D sl Function Manual page 580

Detailed description
2.2 Mode groups
Boundary conditions
"JOG in AUTOMATIC" can only switch internally to JOG if the mode group is in "Mode group
RESET" state, i.e., it is not possible to jog immediately in the middle of a stopped program.
The user can jog in this situation by pressing the JOG key or the Reset key
the mode group.
Selecting AUTOMATIC disables the INC keys and the user can/must press the INC keys
again to select the desired increment. If the NCK switches to "Internal JOG", the selected
increment is retained.
If the user attempts to jog the geometry or orientation axes, the NCK switches to "Internal
JOG" and the motion is executed. Several axes can be physically moved in this way; they
must all be "JOG-capable".
Following the JOG movement, the NCK deactivates "Internal JOG" again and selects AUTO
mode again. The internal mode change is delayed until the movement is complete. This
avoids unnecessary multiple switching operations, e.g., when using the handwheel. The PLC
can only rely on the "Internal JOG active" PLC signal.
The NCK will then switch to "Internal JOG" if the axis is not enabled.
2.2.1 Monitoring functions and interlocks of the individual modes
Channel status determines monitoring functions
Monitoring functions in operating modes
Different monitoring functions are active in individual operating modes. These monitoring
functions are not related to any particular technology or machine.
In a particular mode only some of the monitoring functions are active depending on the
operating status. The channel status determines which monitoring functions are active in
which mode and and in which operating state.
Interlocking functions in operating modes
Different interlocks can be active in the different operating modes. These interlocking
functions are not related to any particular technology or machine.
Almost all the interlocks can be activated in every mode, depending on the operating status.
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Basic logic functions: Mode group, channel, program operation, reset response (K1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
in all channels
of