FANUC FANUC CNC Controllers & Human-Machine Interface (HMI) 2

Question 1

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

Accepted Answer

SRVO

Answer

SYST

Answer

INTP

Answer

MOTN

Question 2

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

Accepted Answer

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

Answer

The teach pendant battery needs replacement

Answer

A DeviceNet communication timeout occurred

Answer

Program memory is full and needs to be cleared

Question 3

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

Accepted Answer

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

Answer

Sets the serial communication baud rate for group 1 devices

Answer

Configures the screen refresh rate for the HMI display

Answer

Sets the maximum speed limit for all axes in group 1

Question 4

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

Accepted Answer

FILE utility 'All of the Above' backup

Answer

MIRROR IMAGE backup

Answer

Cold Start backup procedure

Answer

System DUMP function only

Question 5

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

Accepted Answer

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

Answer

The program completed its last line successfully

Answer

The controller is waiting for supervisor approval to continue

Answer

The controller entered low-power sleep mode automatically

Question 6

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

Accepted Answer

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

Answer

A fixed limit of exactly 100 programs

Answer

A fixed limit of exactly 999 programs

Answer

A fixed limit of 256 programs set at the factory

Question 7

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

Accepted Answer

Cartesian soft limits (interference zones / workspace limits)

Answer

Joint hard limits only

Answer

Hardware limit switches only

Answer

Speed override percentage reduction