FANUC System 3 Alarms
Fanuc System 3 Alarms and Error Codes
These alarm/error codes cove the Fanuc System 3 series.
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System Alarms
| Alarm Code | Type | Description of Alarm/Fault |
| 1 | ROM: SERIES | ROM series error. |
| 1 | ROM: EDITION | ROM edition error. |
| 1 | ROM: PARITY | ROM parity error. |
| 2 | WORK MEMORY: PARITY LOW | Work RAM parity error (low byte). |
| 2 |
WORK MEMORY: PARITY HIGH | Work RAM parity error (high byte). |
| 3 | PROGRAM MEMORY: PARITY LOW | Parity error in the RAM with back up (low byte). |
| 3 |
PROGRAM MEMORY: PARITY HIGH | Parity error in the RAM with back up (high byte). |
| 4 | WATCHDOG TIMER | System error (watch dog timer alarm). |
| 5 | CPU INTERRUPT | CPU error (0, 3, 4 type interrupt generation). |
Servo Alarm
| Alarm Code | Description of Alarm/Fault |
| 01 | The overload signal is output in X and Z axis |
| 02 | The READY signal ( VRDY) of the velocity control unit has turned off. |
| 03 | The READY signal ( VRDY) of the velocity control unit does not turn off even though the READY signal ( PRDY) of the position control has turned off. |
| 04 | Position control system error. Reference point return could not be performed properly because an error occured inside the NC or servo system. Manually return the axis to the reference point. |
| 11 | The content of the error register of the X axis is larger than setting the value. |
| 12 | The content of the error register of the X axis exceeded + or – 32767. Or the velocity command value of the DA converter is out of the range +8191 to -8192. Incorrect settings will cause this alarm. |
| 13 | A feedrate exceeding 511875 detection units/sec. was commanded in the X axis. An incorrect setting of CMR causes this alarm. |
| 14 | X axis motor position feedback cable is disconnected. |
| 15 | Drift on X axis is excessive. ( Exceeds 500 VELO). |
| 21 | The content of error register of the Z axis is larger than the setting value. |
| 22 | The contents of the error register of the Z axis exceeded + or – 32767. Or the velocity command value of the DA converter iis out of the range of +8191 to -8192. |
| 23 | A feedrate exceeding 511875 detection units/sec. was commanded in the Z axis. An incorrect setting of CMR causes this error. |
| 24 | Z axis motor position feedback signal cable is disconnected. |
| 25 | Drift in the Z axis is excessive. ( Exceeds 500 VELO) |