Practice Test Geeks(FANUC) Fuji Automatic Numerical Control Robotics Certification Practice Test
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FANUC CNC Controllers & Human-Machine Interface (HMI) Flashcards

7 cards from real FANUC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 FANUC CNC Controllers & Human-Machine Interface (HMI) flashcards as text

  1. Which alarm prefix does FANUC use for errors related to the robot servo drive system?

    Answer: SRVO

    SRVO alarms indicate servo drive faults such as overcurrent, encoder errors, or position deviations; SYST covers system errors, INTP covers interpreter errors, and MOTN covers motion planning errors.

  2. A FANUC 'SRVO-023 Stop error excess' alarm most likely indicates which condition?

    Answer: The robot's position error exceeded the allowed limit during deceleration to a stop

    SRVO-023 occurs when the servo system detects that actual position deviated from commanded position beyond the allowable limit during a stop, often due to excessive load or mechanical binding.

  3. What is the function of the FANUC system variable $SCR_GRP[1].$AXISMASK?

    Answer: Defines which robot axes belong to motion group 1 using a bitmask

    $SCR_GRP[1].$AXISMASK is a system variable whose bitmask value specifies which physical axes are members of motion group 1, critical for multi-robot or extended-axis configurations.

  4. Which FANUC backup method captures programs, system variables, I/O configuration, and mastering data in a single operation?

    Answer: FILE utility 'All of the Above' backup

    The FANUC FILE utility's 'All of the Above' option (or equivalent full backup) saves all categories of controller data including programs, variables, I/O setup, and calibration data in one step.

  5. What does a FANUC program state of 'PAUSED' indicate?

    Answer: Execution stopped mid-program and can be resumed from the current line

    PAUSED means program execution halted at a specific line (due to an alarm, hold, or operator action) and can be resumed from that exact point, unlike ABORTED which requires restarting from the beginning.

  6. 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.

  7. Which FANUC feature allows software-defined limits on the robot's allowable Cartesian workspace, independent of physical limit switches?

    Answer: Cartesian soft limits (interference zones / workspace limits)

    FANUC Cartesian soft limits create virtual workspace boundaries enforced by the controller software, restricting robot motion to a defined safe region without requiring additional hardware.