CNC alarm reference & shop maintenance

When a machine goes down, know what to do next.

Look up any alarm on Siemens, Fanuc, Heidenhain, Haas and more. Get the likely cause and the fix, then route the job to maintenance with a scan of the machine.

8,500+ alarm codes · 18 controls  ·  Common searches: Siemens 27003Fanuc SV0401Haas 108
SIEMENS 27003
SINUMERIK 840D sl · Safety Integrated
AXIS STOP
Meaning

Checksum error in Safety Integrated data. Drive and NC safety parameters no longer match, so the axis is held in a safe stop.

Fix procedure
  1. Check whether safety parameters were changed or a drive was replaced.
  2. Compare actual and target checksums in the safety machine data.
  3. Confirm the new checksum and perform a power-on reset.
  4. Complete and document the acceptance test.
3 more steps and related parametersUnlock with Pro
Controls coveredSIEMENSFANUCHEIDENHAINOKUMAHAAS
Alarm code library

Written for the person standing at the machine.

Plain-language meanings, ranked causes and ordered fix steps, organized by control and model. Works on any phone, tablet or shop PC.

Siemens840D sl, 828D, 802D Fanuc0i-F, 30i, 31i HeidenhainTNC 640, 530, 620 OkumaOSP-P300, P200 HaasNGC, Classic KUKAKRC4, KRC5
Maintenance requests

Scan the machine. Maintenance gets a work order.

Every machine gets a QR tag. Operators report a problem in under a minute without an account. Maintenance sees it on one board, with the fix guide already attached.

01Scan the tag

The request opens with the machine, cell and control already filled in.

02Describe the problem

Alarm code, issue type, urgency and an optional photo. One screen.

03Maintenance is notified

A work order is created and the team is alerted by email or push.

04Fix and close

The tech logs the cause, parts and time. It becomes part of the machine's history.

HAAS VF-2
Cell 3 · Asset #M-014
NGC
Issue
AlarmNoiseLeakCrashToolingOther
Alarm code
108 SERVO OVERLOAD Y
Status
Machine downRunningLow priority
Photo
Add photo or video
Submit request
Open 3
Haas VF-2 · Cell 3Alarm 108, Y servo overloadMachine down · 4 min ago
Fix guide attached
Okuma LB3000 · Cell 1Coolant leak at turretRunning · 38 min ago
Mazak QTN-200Chip conveyor noiseLow priority · 2 h ago
In progress 1
DMG DMU 50 · Cell 5Siemens 27003 checksumAssigned to maintenance
Fix guide attached
Completed 12
Fanuc Robodrill · Cell 2SV0401 cleared, amp cable reseatedDowntime 42 min
Haas ST-20Lube pump replacedDowntime 1 h 10 min
Why shops use it

Less downtime, fewer outside service calls.

Fast lookup

Find an alarm by code or keyword in seconds, filtered to your controls.

Ordered fix steps

Causes ranked by likelihood, with the parameters and checks involved.

QR machine tags

Print your own or order durable tags. One per machine, no app needed.

Work order board

Open, in progress, completed. Urgency and machine status at a glance.

Machine history

Every alarm and repair saved per machine, so the next shift knows what worked.

Works with your CMMS

Already on Maximo, Fiix or UpKeep? Send alarm fixes straight into your existing work orders.

Pricing

Priced below a single service call.

Outside service typically runs $150 an hour or more. Start free and upgrade when it earns its place.

Free
$0
Alarm lookups for anyone.
  • Alarm meanings, all controls
  • Search by code or keyword
  • Limited assistant questions
Start searching
Pro For technicians
$12 / month
Full fixes for one user.
  • Complete fix procedures
  • Related parameters
  • Troubleshooting assistant
  • Saved machines and history
Start 7-day trial
Shop For teams
$59 / month
Up to 10 machines and 10 users.
  • Everything in Pro
  • QR service requests
  • Work order board and alerts
  • Machine history and downtime
Start shop trial
AxisMD
AxisMD started on the shop floor, out of frustration with digging through manuals while a machine sat idle. It is built to get you from alarm to fix as quickly as possible.
Bryan Mahonski, Founder, AxisMD LLC

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