Mixed Deck — All FANUC Topics Flashcards

What is the MOST effective way for new FANUC professionals to build competency?

Answer: Combining formal education, mentored practice, and ongoing professional development

Building competency requires formal education, mentored practice, and ongoing development.

What is the significance of the 'Group Mask' field when configuring a FANUC TP program?

Answer: It specifies which motion groups the program is allowed to control during execution

The Group Mask field in a TP program header designates which motion groups (1–8) the program has authority to command motion for, preventing unintended control of other groups.

Which gripper design is preferred for FANUC palletizing robots handling fragile or irregularly shaped objects?

Answer: Vacuum (suction cup) gripper with multiple independently controlled zones

Multi-zone vacuum grippers allow sections to be activated or deactivated independently, conforming to different product sizes and protecting fragile items from excessive force.

When using FANUC's Dual Check Safety (DCS), a 'Position/Speed Check' violation alarm does NOT reset automatically after clearing. What must the technician do?

Answer: Cycle power and confirm the robot is within the safe zone before resuming

DCS safety alarms require the robot to be physically moved into a safe position and a deliberate operator action (power cycle + confirmation) before the safety system resets.

What does an error code on the CNC controller indicate?

Answer: Specific fault or issue

Error codes displayed on a CNC controller are diagnostic indicators designed to communicate specific problems within the robot's system. Each code corresponds to a particular fault or issue, guiding technicians to the exact area requiring attention for efficient troubleshooting and repair.

What information is stored in the FANUC TP program's header section?

Answer: Program attributes such as group mask, write protect, and comment

The program header holds metadata including the motion group mask, protection settings, and descriptive comments.

How does a FANUC R-30iB controller determine the maximum number of programs that can be stored?

Answer: Available FROM (Flash ROM) space, allowing thousands of programs depending on size

Program count is limited by available FROM flash memory space rather than a fixed file count, so thousands of small programs or fewer large programs can be stored depending on their size.

During FANUC controller maintenance, the technician notices the SRAM battery alarm is active. What is the immediate risk if power is cycled without replacing the battery first?

Answer: All SRAM-stored data (programs, mastering, system variables) will be lost

SRAM is volatile memory backed only by the controller battery; if power is cycled with a dead battery, all programs, mastering data, and system variables stored in SRAM are permanently erased.

In a FANUC system configured for coordinated motion, what is the 'master' robot's role?

Answer: It provides the reference frame that the 'slave' robot tracks during synchronized motion

The master robot defines the motion path, and the slave robot moves relative to the master's frame in real time.

How often should CNC tools be inspected?

Answer: Before each use

CNC tools should be inspected before each use to ensure they are in optimal condition. This practice helps identify any wear, damage, or dullness that could compromise machining accuracy, workpiece quality, or even lead to tool breakage and safety hazards. Regular inspection extends tool life and maintains consistent production quality.

Which FANUC feature allows multiple robots to share the same workspace and coordinate their movements to avoid collisions?

Answer: Coordinated Motion / Multi-Robot Control

FANUC's Coordinated Motion and Multi-Robot Control software allows two or more robots to synchronize their movements and manage shared workspace safely.

A FANUC CNC robot exhibits excessive backlash on Joint 2. After ruling out software causes, what mechanical component should be inspected first?

Answer: The harmonic drive reducer or gearbox

Excessive backlash on a robot joint is most commonly caused by wear or damage in the harmonic drive reducer or gearbox that transmits motor torque to the link.

In FANUC iRVision, what is a 2D single-view vision process primarily used for?

Answer: Locating parts on a flat surface using a single camera image

2D single-view processes detect part position and orientation from one camera image on a known plane.

What is the FANUC macro instruction $SHELL_CMD used for in advanced programming?

Answer: Executing operating system shell commands from within a Karel program

$SHELL_CMD allows Karel programs to invoke system-level OS commands on the robot controller.

Which body administers the RIA (Robotic Industries Association) standards that FANUC robots must comply with in the US?

Answer: A3 (Association for Advancing Automation)

RIA is now part of A3 (Association for Advancing Automation), which develops and administers the ANSI/RIA R15.06 standard for industrial robot safety in the US.

In Fuji Automatic Numerical Control Robotics Certification practice, what is the FIRST step when a safety hazard is identified in the workplace?

Answer: Immediately secure the area and report the hazard

When a safety hazard is identified, the immediate priority is to secure the area to prevent injury and report the hazard through proper channels.

When performing a risk assessment for a robotic cell per ISO 12100, what is the correct sequence of steps?

Answer: Identify hazards → Estimate risk → Evaluate risk → Risk reduction

ISO 12100 prescribes: identify hazards first, then estimate the risk of each hazard, evaluate whether risk is acceptable, then apply risk reduction measures.

What is the purpose of the FANUC DCS (Dual Check Safety) speed check function?

Answer: It compares TCP speed against a defined safe speed limit and triggers a stop if exceeded

DCS Speed Check monitors the tool center point speed in real time and initiates a Category 0 or 1 stop if the TCP exceeds the configured safe speed limit.

What is the importance of the spindle in CNC machines?

Answer: Holds and spins cutting tool

The spindle is a critical component in CNC machines because it holds and rapidly spins the cutting tool. Its rotation provides the necessary speed and power for the tool to effectively cut, drill, or mill materials. The spindle's precision and rigidity directly impact the quality and accuracy of the machining process.

A FANUC robot axis moves in the wrong direction compared to taught positions after a motor replacement. The technician should:

Answer: Check and correct the axis direction parameter ($DIR_PARAM) or perform re-mastering

Wrong-direction movement after motor replacement typically indicates the replacement motor has a different encoder phase or the axis direction parameter needs to be verified and corrected, followed by re-mastering.