048

Press the RESET button to clear the alarm.

Select Manual Reference Return mode (typically a key position labeled 'REF' or 'HOME' on the mode selector).

Manually jog each axis in the positive direction until the reference position indicator lights up for all axes (X, Y, Z, and any rotary axes).

Ensure the path is clear before moving each axis. The machine will move to its reference position at the preset reference return speed.

Verify all axis reference position indicators are illuminated on the screen, then switch to your desired operating mode and restart the program.

Press RESET, then access the SYSTEM or SETTING screen to check parameter 1815.

Parameter modification requires proper authorization level and should only be done by qualified personnel.

Check parameter 1815 bit 0 (ZRN) - if set to 1, reference return is mandatory after power-up. Verify this matches your machine configuration requirements.

If the parameter setting is incorrect for your application (e.g., you have absolute encoders), consult machine documentation before changing, as this is typically set by the machine builder for safety reasons.

Do not disable reference return requirements without understanding the implications for machine safety and position accuracy.

If parameter is correct, perform manual reference return as described in the first cause block, as the setting requires this operation.

Press RESET and review the part program line where the alarm occurred. Note the N-block number displayed with the alarm.

Check if the alarm occurs at a G28, G54-G59, or tool offset command (G43/G44) near the beginning of the program.

Exit the program and perform manual reference return on all axes as described in cause block 1.

After successful homing, restart the program from the beginning. If the issue persists after proper homing, verify the program syntax and that reference point data is properly set in parameters.