PLC + LinuxCNC for industrial machine with simple HMI (non-G-code operators)

Hello,I work for a company that provides on-site and in-factory service and maintenance for heavy-duty industrial and construction machinery.We are currently developing a large custom machine for laser cleaning and automated painting of heavy equipment and structures. The system will use LinuxCNC as the motion controller, but the machine will be operated by multiple technicians who do not have a G-code programming background.For this reason, we are evaluating the use of a PLC + LinuxCNC architecture, where:

• LinuxCNC handles motion control
• A PLC and HMI handle operator interface, recipes, and simple machine operation (start/stop, part selection, dimensions, safety, etc.)

I would like to hear from others who are using LinuxCNC in an industrial environment with PLC + HMI, especially for machines operated by non-CNC specialists.In particular, I am interested in:

• How you split responsibilities between PLC and LinuxCNC
• How you manage recipes and part parameters
• How you design a simple HMI for operators
• Any recommended PLC platforms or architectures that integrate well with LinuxCNC

Any real-world examples or lessons learned would be greatly appreciated.Thank you.