Siemens SINUMERIK 840DE Programming Manual page 486

Glossary
Interpolator
Logical unit of the -> NCK, which determines intermediate values for the movements to be
traversed on the individual axes on the basis of destination positions specified in the parts
program.
Interpolatory compensation
With the aid of interpolatory compensation, manufacturing leadscrew errors and measuring
system errors can be compensated (LEC, MSEC).
interrupt routine
Interrupt routines are special -> subroutines, which can be started on the basis of events
(external signals) in the machining process. A parts program block, which is currently being
worked through is interrupted and the position of the axes at the point of interruption is
automatically saved.
Interrupts
All alarms and -> messages are output on the operator panel in plain text with the date and
time and a symbol indicating the cancel criterion. The display is divided into alarms and
messages.
1. "Alarms and messages" in the parts program:
2. Alarms and messages from the PLC
Inverse time feedrate
With the SINUMERIK 840D, it is possible to program the time required to traverse the path of
a block instead of programming the feedrate for the axis movement (G93).
Jog
Control operating mode (setup mode): In JOG mode, it is possible to set up the machine.
Individual axes and spindles can be moved in this mode using the direction keys. Other
functions available in JOG mode are -> reference point approach, -> repositioning and ->
preset (setting an actual value).
Key switch
1. S7-300: The keyswitch is the operating mode switch of the -> CPU. A removable key is
2. 840D: The keyswitch on the -> machine control panel has 4 settings, to which functions
Glossary-10
Alarms and messages can be displayed in plain text directly from the parts program.
Alarms and messages from the machine can be displayed in plain text from the PLC
program. No additional function block packages are required to do this.
used to operate the keyswitch.
are assigned by the operating system of the control. Three differently colored keys also
belong to the keyswitch. These keys can be pulled out of the keyswitch in the indicated
positions.
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals