Special Features Of Incremental Travel - Siemens SINUMERIK 840D sl Function Manual

Manual and Handwheel Travel (H1)
4.3 Incremental travel (INC)
● On deselection or change of the current increment (e.g., change from INC100 to INC10)
● In the event of faults (e.g., on cancellation of the servo enable)
Note
While an axis is moving, a change of mode from JOG to AUT or MDI is not permitted
within the control.
4.3.3

Special features of incremental travel

Indexing axes
Irrespective of the current set increment value, an axis that is declared as an indexing axis
(MD30500 $MA_INDEX_AX_ASSIGN_POS_TAB (axis is indexing axis)) traverses to the
next higher indexing position when the "+" traversing key is pressed.
Similarly, pressing the "-" traversing key causes the next lower indexing position to be
approached.
References:
/FB2/ Function Manual, Extended Functions; Indexing Axes (T1)
286
CAUTION
Software limit switches and working-area limitations are only activated after reference
point approach.
WARNING
If "continuous" mode is selected, several axes can by started by pressing and releasing
the relevant direction key. Any interlocks must be implemented via the PLC!
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions