HMI
HMI, which stands for Human Machine Interface, is like a control panel or screen that lets people interact with industrial machines and equipment. Think of it as the dashboard where workers can monitor, control, and check how machines are running. It's similar to how you use a touchscreen at an ATM, but for industrial equipment. These interfaces can be as simple as basic button panels or as complex as large touchscreens that show detailed information about the entire factory. You might also hear people call these "operator interfaces" or "control panels."
Examples in Resumes
Programmed and maintained HMI screens for production line monitoring
Upgraded outdated control panels to modern HMI systems
Trained operators on new Human Machine Interface systems
Troubleshot and repaired HMI displays and controls in manufacturing environment
Typical job title: "HMI Technicians"
Also try searching for:
Where to Find HMI Technicians
Online Communities
Professional Networks
Industry Events
Example Interview Questions
Senior Level Questions
Q: How would you manage a facility-wide HMI upgrade project?
Expected Answer: Should discuss project planning, minimizing downtime, training operators, ensuring backup systems, and coordinating with different departments. Should mention importance of documentation and testing.
Q: What factors do you consider when designing an HMI screen layout?
Expected Answer: Should talk about user-friendly design, emergency access, color coding for safety, consistent navigation, and considering operator feedback in the design process.
Mid Level Questions
Q: How do you troubleshoot an HMI that's not communicating with equipment?
Expected Answer: Should explain checking physical connections, network settings, communication protocols, and basic software troubleshooting steps.
Q: What safety features do you implement in HMI systems?
Expected Answer: Should discuss emergency stops, warning screens, user access levels, and backup systems for critical operations.
Junior Level Questions
Q: What are the basic components of an HMI system?
Expected Answer: Should be able to describe the screen/display, controllers, input devices, and basic software components in simple terms.
Q: How do you perform routine maintenance on HMI equipment?
Expected Answer: Should describe cleaning procedures, checking connections, backing up programs, and basic diagnostic checks.
Experience Level Indicators
Junior (0-2 years)
- Basic HMI operation and monitoring
- Simple screen navigation
- Basic maintenance and cleaning
- Following safety procedures
Mid (2-5 years)
- Troubleshooting communication issues
- Screen layout modifications
- Operator training
- System upgrades and updates
Senior (5+ years)
- Project management
- System design and integration
- Advanced troubleshooting
- Team leadership and training development
Red Flags to Watch For
- No hands-on experience with industrial equipment
- Lack of safety awareness
- No understanding of industrial communication protocols
- Unable to read basic electrical diagrams
- No experience with equipment maintenance
