FANUC Cheat Sheet 2026

The 30 highest-yield FANUC facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is the role of emergency stops? → To immediately stop operations
2. To back up FANUC robot programs and system parameters to a USB drive, which image type preserves ALL data including mastering and calibration? → IMAGE backup (SYSIMAGE.IMG)
3. Which FANUC safety zone type triggers a stop only when the robot TCP exits a defined boundary? → DCS Cartesian position check (outside stop)
4. Which FANUC diagnostic screen shows real-time axis torque values useful for detecting mechanical overloads? → Status/Servo screen (servo diagnostic monitor)
5. What is the significance of the 'Group Mask' field when configuring a FANUC TP program? → It specifies which motion groups the program is allowed to control during execution
6. A FANUC controller's Group Output (GO) signal is used to: → Send a binary-encoded integer value to a PLC or peripheral device
7. Which FANUC robot series is most commonly used for arc welding applications due to its slim arm and hollow wrist design? → ARC Mate series
8. When validating a safety-rated monitoring function on a FANUC robot, what must be verified per ISO 13849-1 to confirm the achieved Performance Level (PL)? → MTTFd, DCavg, CCF measures, and system architecture (category)
9. Which joint configuration setting prevents a FANUC robot from flipping its wrist during continuous linear motion? → SINGULARITY AVOIDANCE enable in motion setup
10. What is the purpose of the CYCLE START button on a FANUC robot operator panel? → Starts or resumes program execution in AUTO mode
11. Which teach pendant display shows the robot TCP's current position in X, Y, Z, W, P, R Cartesian coordinates? → WORLD or USER frame position screen
12. Which built-in FANUC iPendant capability allows a networked PC to monitor controller status via a standard web browser? → iPendant built-in web server (browser interface)
13. A FANUC robot arm drifts out of position overnight with the controller powered off. What is the most likely cause? → Worn or failed axis brake not holding joint position
14. What distinguishes a Fuji Automatic Numerical Control Robotics Certification certified professional from a non-certified practitioner? → Certification validates competency through standardized assessment against benchmarks
15. Which control element on the FANUC teach pendant must be held in the intermediate position to enable robot motion in T1 or T2 manual mode? → Deadman (enable) switch
16. What is the correct sequence to perform a cold start on a FANUC robot controller? → Cycle power while holding PREV + NEXT on the teach pendant
17. During a FANUC mastering procedure using the witness mark method, what must be true before setting the zero point? → Each joint must be aligned so its witness marks are exactly matched
18. Which FANUC peripheral interface standard supports hot-swappable end-of-arm tools and automatic program and I/O routing changes? → Tool Change Interface (TCI) with automatic configuration
19. What is a PLC in robotics? → Programmable Logic Controller
20. Which FANUC alarm indicates that the robot has exceeded its defined work envelope limit? → MOTN-023 Joint limit exceeded
21. Which tool is essential for checking alignment? → Laser alignment tool
22. In FANUC material removal (deburring) applications, which software feature compensates for tool wear and keeps consistent contact force on the part surface? → Force Control (FANUC Force Sensor) with constant-force motion
23. Which statement BEST describes the relationship between Fuji Automatic Numerical Control Robotics Certification certification and industry evolution? → Requirements evolve periodically to reflect advances in knowledge and practice
24. How does the FANUC body of knowledge relate to daily professional practice? → It provides the foundational framework guiding decision-making and standard practices
25. Which FANUC system variable should a technician check to verify the remaining battery voltage for SRAM memory backup? → $BATT_VOLT
26. What does the speed OVERRIDE percentage control on a FANUC robot system? → Scales all programmed robot motion speeds proportionally
27. What protective equipment should operators wear? → Appropriate PPE
28. How does the FANUC body of knowledge relate to daily professional practice? → It provides the foundational framework guiding decision-making and standard practices
29. What is the first step in troubleshooting a CNC robot? → Diagnosing the problem
30. In a FANUC cell using PROFINET IO, the robot controller is configured as a: → PROFINET IO Device (slave) communicating with a PROFINET IO Controller (PLC master)