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Fanuc alarm

EX1000 Machine Builder (PMC) Alarms, EX1000 to EX2999

Alarms numbered 1000 and up (often shown as EX alarms) are not Fanuc's.

Warning: act soonFanuc 0i, 16i/18i/21i and 30i/31i/32i controls

What it means

Alarms numbered 1000 and up (often shown as EX alarms) are not Fanuc's. They are written by your machine builder in the PMC ladder program, so the same number means different things on a Haas, Mori Seiki, Doosan or Okuma Fanuc machine. Common ones are low air, low lube, coolant level, door interlocks and tool changer positions.

Common causes

  • Low air pressure
  • Low lube or hydraulic level
  • Door or guard switch open
  • Tool changer, turret or pallet sensor not made
  • Chip conveyor or coolant pump overload

What to check first

  1. Read the full text on the screen. It usually names the switch or system
  2. Look up the number in your machine builder's manual, not Fanuc's
  3. Check air, lube, coolant and doors first

Lock out the machine before reaching into it. Never bypass a door switch or interlock to clear an alarm.

When to call a repair tech

When the message points to a sensor or tool changer that won't reach position, a tech who knows your machine builder's ladder can find it fast.

Repair companies that work on Fanuc

See all Fanuc repair

Quick answers

What does Fanuc alarm EX1000 mean?

Alarms numbered 1000 and up (often shown as EX alarms) are not Fanuc's. They are written by your machine builder in the PMC ladder program, so the same number means different things on a Haas, Mori Seiki, Doosan or Okuma Fanuc machine. Common ones are low air, low lube, coolant level, door interlocks and tool changer positions.

What causes Fanuc alarm EX1000?

Low air pressure. Low lube or hydraulic level. Door or guard switch open. Tool changer, turret or pallet sensor not made. Chip conveyor or coolant pump overload.

How do I fix Fanuc alarm EX1000?

Read the full text on the screen. It usually names the switch or system. Look up the number in your machine builder's manual, not Fanuc's. Check air, lube, coolant and doors first. When the message points to a sensor or tool changer that won't reach position, a tech who knows your machine builder's ladder can find it fast.

Alarm numbers and text can differ by control model, software version and machine builder. This page is a starting point from people who have worked on these machines, not a replacement for your machine builder's manual.

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