FANUC Product Families and Alarm Codes

FANUC at a glance

Manufacturer: FANUC
Relevant areas: Industrial robots and controllers, CNC systems, servo/spindle systems and compact machining centers
Selected families: R-30iB Plus, 0i-F Plus and ROBODRILL α-DiB Plus
Primary diagnostic interfaces: Robot teach pendant/alarm history for R-30iB Plus; CNC alarm screen plus amplifier displays for CNC systems; ROBODRILL iHMI/maintenance screens and machine/CNC documentation
Diagnostic model: Robot, CNC, PMC/machine-tool-builder, servo, spindle and power-supply alarms are separate namespaces
Manufacturer website: FANUC ↗

Selected FANUC product families

R-30iB Plus

Role: R-30iB Plus is a FANUC robot-controller family offered in several cabinet formats.
Typical use: The controller is paired with compatible FANUC industrial robots in applications such as material handling, machine tending, welding, dispensing, assembly, palletizing and other automated processes.
Diagnostic identifiers: Teach-pendant alarm with domain prefix, alarm history, motion group, controller software and robot/cell context
Important: They are Alpha-i CNC servo-amplifier status-display alarms from FANUC America's CNC Tech Tips.

0i-F Plus

Role: 0i-F Plus is a FANUC CNC series with variants for applications such as milling and turning.
Typical use: 0i-F Plus controls standard machine tools and machining applications.
Diagnostic identifiers: CNC alarm screen, PMC/machine alarms, axis context and power/servo/spindle amplifier status displays
Important: CNC system alarms, PMC/machine alarms, servo alarms, spindle alarms, power-supply displays and machine-tool-builder messages are separate.

ROBODRILL α-DiB Plus

Role: ROBODRILL α-DiB Plus is FANUC's compact vertical-machining-center family for drilling, tapping, boring and milling applications.
Typical use: The family is used for high-speed, high-precision machining in industries and job shops that require compact automated machining.
Diagnostic identifiers: Machine/CNC alarm, iHMI maintenance screen, affected subsystem and installed amplifier displays
Important: A ROBODRILL may use a compatible FANUC servo system, but exact amplifier generation, module role and machine alarm mapping must be confirmed from its parts and maintenance documentation.

How to diagnose FANUC devices

Use the complete diagnostic identifier together with the exact device, configuration and manufacturer documentation. The number or display label alone does not establish the cause.

01Identify the device
What to check: Exact product, hardware variant, options and firmware.
Why it matters: Diagnostic meanings depend on the installed configuration.
02Capture the identifier
What to check: Complete code, full message, timestamp and operating state.
Why it matters: A short code can omit the context needed to interpret an event.
03Identify the source
What to check: Controller, module, drive, amplifier, application or connected system.
Why it matters: Similar identifiers can come from different diagnostic systems.
04Read detailed diagnostics
What to check: Device log, engineering software, display and event history.
Why it matters: Detailed records identify the affected component and event sequence.
05Match the correct manual
What to check: Documentation for the exact family, hardware and software version.
Why it matters: This avoids using the meaning from a different product or release.

R-30iB Plus robot controllerTeach-pendant alarm with domain prefix, alarm history, motion group, controller software and robot/cell context

0i-F Plus CNCCNC alarm screen, PMC/machine alarms, axis context and power/servo/spindle amplifier status displays

ROBODRILL α-DiB PlusMachine/CNC alarm, iHMI maintenance screen, affected subsystem and installed amplifier displays

FANUC Alpha-i servo-amplifier alarms

FANUC America publishes CNC Tech Tip videos for the following Alpha-i servo-amplifier status displays. The table is a scoped orientation aid, not a substitute for the applicable servo-amplifier maintenance manual.

Amplifier Alarm 1 · internal cooling fan

Amplifier Alarm 1internal cooling fan

Documented meaning: FANUC's Alpha-i servo-amplifier Tech Tip identifies Alarm 1 as an internal cooling-fan condition.