Hello, I am Govind from Bangalore, India.
I have a production related issues on our CNC machines.

When the CNC operator does not keep the work-piece material properly on the machine bed or worktable, the machine simply runs and the time get wasted. After realizing the mistake, the operator keeps it properly and re-run the machine. It happens especially during night shift, and the production capacity affects.

Is there any solution (programming or sensor related) to avoid such mistakes?
If the work-piece material is improperly placed on the machine bed or worktable,
the machine should give an alarm signal (warning) to the operator, so that he can immediately rectify it. How to achieve this? Any practical solution for this problem? Thanks in advance.