Continuous Travel; General Functionality; Distinction Between Inching Mode Continuous Mode - Siemens SINUMERIK 840D sl Function Manual

4.2

Continuous travel

4.2
4.2.1

General functionality

Selection
In JOG mode, continuous travel must be activated via the PLC interface:
DB21, ... DBX13.6, ff (machine function: continuous)
As soon as continuous travel is active, interface signal
DB21, ... DBX41.6, ff (active machine function: continuous)
is returned to the PLC. continuous)
returned.
Traversing keys +/-
The plus and minus traversing keys are selected to move the relevant axis in the appropriate
direction. If both traversing keys are pressed simultaneously, there is no traversing
movement, or, if an axis is in motion, it is stopped.
Note
When the control is switched on, axes can be traversed to the limits of the machine because
they have not yet been referenced. This can cause emergency limit switches to be triggered.
The software limit switches and the working-area limitation are not operative.
Motion command +/-
As soon as a travel request is pending for an axis (e.g., once a traversing key has been
pressed), the
DB21, ... DBX40.7 (motion command +)
or
DB21, ... DBX40.6 (motion command -)
interface signal is output, depending on the direction of movement.
4.2.2

Distinction between inching mode continuous mode

Selection
In JOG mode, we distinguish between traversing in inching mode and in continuous mode.
The selection is made using general setting data
SD41050 $SN_JOG_CONT_MODE_LEVELTRIGGRD
(inching mode/continuous mode in continuous JOG)
and applies to all axes.
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
H1: Manual travel and handwheel travel
4.2 Continuous travel
289