What causes FANUC alarm 5228?

Machine system or function indicated by the alarm name has detected a fault. Control parameter or configuration error related to the alarm condition. Hardware component fault on the CNC or machine. Part program error or illegal operation for the indicated function. Machine interlock or safety condition not satisfied.

How do I fix FANUC alarm 5228?

1. Note the alarm number and check the Fanuc alarm screen for any sub-code or additional details. 2. Identify the specific machine system or function from the alarm name. 3. Power cycle the machine to clear transient faults. 4. Consult the Fanuc parameter or operator manual for alarm 5228 specific remedy. 5. Contact Fanuc service if the alarm persists after basic troubleshooting.

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FANUC Controller

Program/G-code · Intermediate · 5-15 minutes

Alarm 5228

Fanuc Alarm 5228 - SAME NAME USED

Alarm 5228 SAME NAME USED occurs when attempting to create, rename, or register a file (program, macro, subprogram) with a name that already exists in the current directory or memory storage. This is a file system protection mechanism preventing duplicate file names in the CNC's program memory or storage devices (CF card, USB, internal memory).

FANUCProgram/G-codeIntermediate5-15 minutes

5228

Fanuc Alarm 5228 - SAME NAME USED

SYSTEM ALARM 5228

Root Cause Summary

Alarm 5228 SAME NAME USED occurs when attempting to create, rename, or register a file (program, macro, subprogram) with a name that already exists in the current directory or memory storage. This is a file system protection mechanism preventing duplicate file names in the CNC's program memory or storage devices (CF card, USB, internal memory).

Causes and Fixes

1
Navigate to the program directory screen (EDIT > PROGRAM or MEMORY mode) and press the [PROG DIR] soft key to display all existing program names and O-numbers in memory.
2
Verify the program name or O-number that triggered the alarm against the directory listing. Check both main memory and any mounted storage devices (CF card, USB) by toggling [DEVICE] soft key.
3
Either delete the existing program with the duplicate name using the DELETE function, or rename the new program to a unique O-number or file name before attempting to register again.
Ensure the existing program is not currently in use or required for production before deletion. Back up critical programs to external storage first.
4
Re-attempt the file registration or save operation. If using DNC or network transfer, verify the destination path and file naming convention to avoid conflicts with existing files.

DIY Feasiblehigh confidence

Call a technician if:

·Parameter access is password protected
·Persistent alarm after following all steps
·Network/DNC system configuration issues

Prevention

Maintain program numbering log
Set parameter 3202 bit 0 to 1 for overwrite protection
Use consistent numbering conventions
Regular program directory cleanup

Common Mistakes

Not checking existing programs before transfer
Ignoring parameter 3202 overwrite settings
Using random program numbers without system
Attempting to overwrite protected programs

Related Alarms

5229 5230 078 079

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Always verify with your machine manual or a certified technician before performing service procedures.