Siemens SINUMERIK 840D sl Function Manual page 476

K1: Mode group, channel, program operation, reset response
9.5 Program test
Application
High cutting speeds
Workpieces may not be machined when "dry run feedrate" is active because the altered
feedrates might cause the permissible tool cutting rates to be exceeded and the workpiece
or machine tool could be damaged.
Selection
This function is selected via the user interface in the "Program control" menu.
The selection sets the following interface signal:
DB21, ... DBX24.6 (dry run feedrate selected)
This does not activate the function.
Activation
The function is activated via interface signal:
DB21, ... DBX0.6 (activate dry run feed)
Display
Active dry run feedrate mode is indicated by a reversal in the relevant field in the status line
on the user interface.
476
DANGER
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions