Interview Questions and Answers FANUC Robot (2025)

Top FANUC Robot Interview Questions and Answers (2025)

1. What is a FANUC robot and where is it used?

Answer:

FANUC robots are industrial robots developed by FANUC Corporation, widely used for automation in manufacturing sectors such as automotive, electronics, aerospace, and packaging. These robots perform tasks like welding, painting, material handling, assembly, and pick-and-place operations.
Queries: What is a FANUC robot, FANUC robot applications, industrial automation robots

2. What programming language is used for FANUC robots?
Answer:
FANUC robots use KAREL and TP (Teach Pendant) programming. TP programming is a structured, menu-based language designed for simple robot tasks, while KAREL is a Pascal-like language used for more complex operations, including data manipulation and background tasks.
Queries: FANUC programming language, TP vs KAREL, how to program FANUC robots

3. What is a teach pendant in FANUC robots?
Answer:
The teach pendant is a handheld interface device used to control and program FANUC robots. It allows users to jog the robot, record positions, create motion paths, set parameters, and execute programs. The teach pendant is essential for robot teaching and diagnostics.
Queries: FANUC teach pendant explained, how to use FANUC teach pendant, robot teach interface

4. What are the main types of FANUC robots?
Answer:
FANUC offers a wide range of robots, including:

Articulated Robots (6-axis)

SCARA Robots

Delta Robots (for high-speed pick and place)

Collaborative Robots (cobots) like the FANUC CR series

Each type is suited to specific industrial applications.
Queries: FANUC robot types, FANUC SCARA vs articulated, collaborative FANUC robots

5. Explain the difference between Joint, Linear, and Circular motions in FANUC robots.
Answer:

Joint (J) Motion: Moves robot joints independently to reach a point fastest.

Linear (L) Motion: Moves the robot in a straight line from point A to B.

Circular (C) Motion: Moves the robot through a circular arc to a destination point.

Each motion type affects accuracy, speed, and tool orientation.
Queries: FANUC motion types, joint vs linear vs circular FANUC, robot motion programming

6. How do you back up and restore a FANUC robot program?
Answer:
To back up a FANUC robot:
1. Insert a USB or PCMCIA card into the teach pendant.
2. Go to FILE > Backup > All of Above (Image Backup).
3. Store the backup externally.
To restore:
1. Use Cold Start or Controlled Start and access the restore menu.
2. Load files via USB or memory card.
Queries: FANUC robot backup and restore, how to save FANUC robot programs, FANUC image backup

7. What is a UFrame and UTool in FANUC robots?
Answer:

UFrame (User Frame): Defines the coordinate system of the workpiece.

UTool (User Tool): Defines the position and orientation of the tool attached to the robot arm.

Both are crucial for accurate and flexible robot programming.
Queries: FANUC UFrame UTool explained, coordinate systems FANUC, robot tool and frame setup

8. How do you calibrate a FANUC robot?
Answer:
Robot calibration involves setting:

Zero positions of each axis using the Zero Position Mastering.

TCP (Tool Center Point) using 3-point or 6-point methods.

User Frame using position teaching.

This ensures precision in motion and repeatability.
Queries: FANUC robot calibration, zero mastering FANUC, TCP setup FANUC

9. What safety features are included in FANUC robot systems?
Answer:
FANUC robots include:

Emergency stop (E-Stop)

Safety interlocks

Software limit switches

DCS (Dual Check Safety) system

Zone monitoring and safe speed functions .These help prevent injury and equipment damage.
Queries: FANUC robot safety features, DCS FANUC robot, robot safety standards