Error Fanuc PS5111: G-code modal impropio

Causas probables, síntomas y comprobaciones seguras para la alarma Fanuc PS5111. Verifica siempre el manual oficial antes de intervenir.

Este manual de alarmas CNC reúne referencias orientativas para controles Fanuc, Haas, Siemens, Heidenhain, Mazak, Okuma y Mitsubishi. Busca por código, marca, área de la máquina o síntoma para revisar causas probables, comprobaciones seguras y criterios para decidir cuándo llamar a mantenimiento. Antes de resetear, mover ejes o intervenir, confirma siempre el código completo y el procedimiento en el manual oficial de tu máquina.

Las alarmas CNC pueden variar según fabricante, control, PLC y máquina. Verifica siempre el código completo en los manuales oficiales antes de resetear, mover ejes o intervenir. GetGCode no se hace responsable de daños personales, daños materiales, paradas de producción, errores de diagnóstico ni decisiones tomadas a partir de esta información orientativa. Las marcas citadas pertenecen a sus respectivos titulares (ver Legal notice).

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Esta ficha es orientativa y no sustituye el manual oficial de la máquina/control. Antes de resetear, mover ejes o intervenir, confirma el código completo, subcódigo y procedimiento del fabricante.

PS5111

FanucProgram

G-code modal impropio

Fanuc detects an incompatible modal G-code, typical in look-ahead modes or advanced functions.

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Machine

Milling, Mill-turn

Severidad

Parada

Reset / Rearme

Reset tras corregir secuencia modal.

Symptoms

  • Alarm when activating advanced mode.
  • Fails with G05.1/look-ahead or high speed.
  • May depend on previous modal states.

Causas comunes

  • G-code incompatible activo.
  • Do not cancel previous mode.
  • Post-processor not adapted to the control.

Primeras comprobaciones seguras

  • Check the modal states before the block.
  • Cancel advanced modes when applicable.
  • Validate the post for that Fanuc.

What not to do

  • Do not bypass safety devices.
  • Do not manipulate energized electrical cabinet.
  • Do not continue producing if the alarm reappears.

When to call maintenance: Si la opción instalada no coincide con la documentación o post configurado.

Referencia orientativa. Confirmar siempre el texto completo en el manual exacto de máquina/control.

APC / BAT

Encoder / measurement

Absolute encoder battery low

Fanuc/OEM warns of low battery or loss of reference in absolute encoder.

APC300-APC306

Encoder / measurement

APC/battery error press coder

Fanuc reports communication errors, frame or low battery of the absolute pulse coder.

DS0001

Spindle

Integrated spindle/servo alarm (DS)

Fanuc reports a DS category fault (integrated alarms that combine drive and CNC conditions).

Fanuc 950/951

PLC/machine

PMC system alarm / watchdog

Fanuc reports an internal fault or PMC/PLC watchdog.

FSSB / SV5136

Servo / ejes

FSSB servo bus error

Fanuc detects FSSB optical communication problem between CNC and amplifiers.

FSSB 5134/5135/5137-5139

Servo / ejes

FSSB: timeout, error mode or incorrect configuration

Fanuc detects initialization/configuration failure of the FSSB servo bus between CNC and amplifiers.

Haas 100

Sobrecarrera

Machine not referenced at boot

Haas detects that the machine did not complete zero return upon power-up or after an alarm.

Haas 101

PLC/machine

Communication failure with Mocon

The Haas control detects communication or memory failure with the board/motion control.

Haas 102

Servo / ejes

Servos apagados

Haas indicates that the servos are disabled or not ready.

Haas 103-106

Servo / ejes

Servo error too large

Haas detects excessive tracking error in X/Y/Z/A according to alarm number.

Haas 107

Safety

Emergency Off (E-stop pulsada)

Haas detects the emergency stop pressed or the E-stop circuit open.

Haas 108-111

Servo / ejes

X/Y/Z/A servo overload

Haas detects prolonged excessive consumption of the servo of the indicated axis, characteristic of jamming or mechanical loading.

Haas 112

PLC/machine

No interrupt / internal control fault

Haas detects internal interrupt/control fault that prevents normal operation.

Haas 118

Servo / ejes

Axis not aligned / invalid reference

The machine detects that an axis is not correctly aligned or referenced to continue.

Haas 119

Power supply

Overvoltage / overvoltage

The bus or electrical input exceeds the allowed range and the machine disables systems.

Haas 120

Safety

Low air pressure

The Haas machine does not detect sufficient air pressure to operate systems.

Haas 121

Lubrication

Low lubrication or low pressure

Haas detects insufficient level/pressure in the lubrication system or associated pressure.

Haas 122

Power supply

Regen overheat

The Haas brake resistor/regeneration circuit overheats.

Haas 123

Spindle

Fallo de drive de husillo

The control receives a fault condition from the spindle drive/vector drive.

Haas 124

Power supply

Low battery

Haas warns of low battery for memory/parameters according to control generation.

What are CNC alarms and how are they interpreted?

Las alarmas CNC son mensajes de diagnóstico que detienen o limitan la máquina cuando el control detecta un problema de programa, servo, husillo, seguridad, PLC, lubricación, refrigerante o recorrido de ejes. El mismo código puede cambiar según el fabricante, la serie del control, la máquina y las opciones instaladas, por lo que siempre debe verificarse contra el manual oficial antes de resetear o intervenir.

Main categories of CNC alarms

Servos, ejes y encoders

These cover amplifier faults, loss of reference, encoder problems, over-travel, mechanical jams or an axis not ready. Before moving the machine, identify the axis, sub-code and drive status.

Spindle, power and coolant

These group spindle overload, orientation, inverter, temperature, and lack of coolant or lubrication. Check the cutting load, ventilation, fluid levels and the drive's auxiliary alarms.

Program, cycles and syntax

They appear because of unsupported G/M codes, badly parameterised cycles, missing subprograms, wrong offsets or a post-processor set up for another control.

Seguridad, puertas y PLC

These include emergency stops, doors, interlocks, air pressure, the ATC, sensors or machine logic. Safety devices must never be bypassed to keep production running.

Frequently asked questions about CNC alarms

What do I do if the RESET button does not clear the control alarm?

Some safety alarms, such as servo faults, hard limits or emergency stops, latch in the system. To clear them you must first fix the root cause, for example removing chips from a sensor, then switch the machine fully off at the main breaker and power it up again following the manufacturer's procedure.

What does the APC/Encoder low battery alarm mean and how to fix it?

Esta alarma indica que la pila que conserva la posición de los ejes o encoder absoluto está casi agotada. Normalmente hay un margen limitado para cambiarla. La sustitución debe hacerse siguiendo el manual oficial; en muchas máquinas se realiza con la máquina encendida y en parada de emergencia para no perder referencias. Si se apaga sin batería válida, el control puede perder cero máquina, límites de carrera o referencias de ejes.

How do I clear an Over Travel or Hardware Limit alarm?

Over-travel appears when an axis reaches the safety limit switch. To free it you normally switch to manual JOG or handwheel/MPG, hold the limit override or OT Release/Limit Override button if the machine has one, and move the blocked axis away from the stop. Do it at low feed and check the machine manual.

Why does an alarm go off when trying to change the M06 tool?

Failures during M06 or turret indexing are usually caused by insufficient pneumatic or hydraulic pressure, inductive sensors fouled by coolant or chips, or axes away from the reference point required for the change. Before editing the program, check pressure, sensors, ATC/turret status and the G28 or G30 return position for your machine.

When should I stop intervening and call the SAT technical service?

Stop and call service for alarms about lost parameters, memory or parity errors, short circuits in amplifier modules, SPM/SVM/PSM alarms on Fanuc, a burning smell, blown fuses or continuous spindle overheating. Insisting with resets can make faults in boards, drives or motors worse.

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