Siemens SINUMERIK 840D sl Commissioning Manual page 317

Preconditions for starting measuring functions
To ensure that no erroneous traversing movements due to part programs can be carried out,
the measuring functions have to be started in <JOG> mode.
NOTICE
Avoiding collisions
When traversing movements are carried out within the framework of measuring functions, no
software limit switches and working area limitations are monitored, since these are carried out
in follow-up mode.
Prior to starting traversing movements, the user must therefore ensure that the axes are
positioned such that the traversing limits specified within the framework of the measuring
functions are sufficient to prevent collision with the machine.
Starting measuring functions
Measuring functions initiating a traversing movement are only selected using the specific
softkey. The actual start of the measuring function and thus of the traversing movement is
always carried out with <NC-START> on the machine control panel.
If the main screen of the measuring function is exited without the traversing movement being
initiated, the selection of the traversing function is canceled.
Once the traversing function has been started, the main screen can be exited without any affect
on the traversing movement.
Note
<JOG> mode must be selected when measuring functions are started.
Further safety notices
When using the measuring functions, it must be ensured:
● There are no obstacles in the traversing range.
● The Emergency Stop button is always within reach.
Canceling measuring functions
The following events will cancel active measuring functions:
● Hardware limit switch reached
● Traversing range limits exceeded
● Emergency Stop
● Reset (mode group, channel)
● NC STOP
CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA
10.5 Measuring functions (manual tuning)
Drive tuning
317