Function Block Programming

Term from Electrical Engineering industry explained for recruiters

Function Block Programming is a visual way of programming industrial equipment and control systems, similar to connecting building blocks. Instead of writing traditional computer code, engineers use pre-made blocks that represent different operations (like timers, counters, or motor controls) and connect them with lines to create automation programs. Think of it like creating a flowchart where each block performs a specific task. This method is commonly used in manufacturing, building automation, and process control industries because it's easier to understand visually and makes troubleshooting simpler for maintenance teams.

Examples in Resumes

Developed control systems using Function Block Programming for automated manufacturing lines

Implemented safety systems with Function Block Diagrams and FBD

Upgraded existing PLC systems using Function Block Programming to improve production efficiency

Typical job title: "Control Systems Engineers"

Also try searching for:

Automation Engineer PLC Programmer Control Systems Programmer Industrial Controls Engineer Manufacturing Systems Engineer Process Control Engineer

Example Interview Questions

Senior Level Questions

Q: How would you approach migrating an old relay-based control system to a modern Function Block system?

Expected Answer: A senior engineer should discuss analyzing existing system requirements, planning the migration in phases, ensuring minimal production downtime, and implementing proper testing procedures. They should also mention training considerations for operators.

Q: How do you ensure safety and reliability in Function Block Programming systems?

Expected Answer: Should explain about redundancy, fail-safe programming practices, system backups, and how to implement emergency stops and safety interlocks using function blocks.

Mid Level Questions

Q: Can you explain how you would troubleshoot a Function Block program?

Expected Answer: Should describe how to use monitoring tools, check signal flows between blocks, verify input/output connections, and use simulation features to test program sections.

Q: How do you document Function Block programs for future maintenance?

Expected Answer: Should discuss naming conventions, block comments, program structure documentation, and creating user manuals for operators and maintenance staff.

Junior Level Questions

Q: What is the difference between a function block and a basic function?

Expected Answer: Should explain that function blocks can maintain data between executions (like timers or counters) while basic functions just process inputs to outputs each time they run.

Q: What are some common function blocks you've worked with?

Expected Answer: Should be able to describe basic blocks like timers, counters, comparators, and simple math operations, and explain their basic usage.

Experience Level Indicators

Junior (0-2 years)

  • Basic function block programming concepts
  • Understanding of simple control loops
  • Basic troubleshooting
  • Reading electrical schematics

Mid (2-5 years)

  • Complex control system design
  • Program optimization
  • Integration with different hardware platforms
  • Advanced troubleshooting

Senior (5+ years)

  • System architecture design
  • Safety system implementation
  • Project management
  • Team leadership and training

Red Flags to Watch For

  • No hands-on experience with actual control systems
  • Lack of understanding of industrial safety requirements
  • No experience with any major PLC platforms
  • Unable to read basic electrical diagrams
  • No knowledge of industrial communication protocols