Okuma Alarm P-0827 – Control Axis Not Found

The Okuma alarm P0827 indicates that the CNC control cannot detect a configured axis. This alarm appears when the control axis bit data between the PLC and NC is set to “0”, which means that the system cannot identify or activate the required axis.

This issue can occur due to incorrect PLC-to-NC configuration, missing axis parameters, or communication problems between the CNC control and the axis control modules. In some cases, hardware faults such as defective control boards, servo drives, or damaged communication connections may also trigger this alarm.

Possible causes of Okuma Alarm P0827

• Incorrect PLC → NC axis bit configuration

• Axis not properly defined in the CNC parameters

• Communication failure between PLC and NC control

• Faulty control board or CPU board

• Servo drive or axis control module malfunction

• Electrical connection problems or damaged cables

If the alarm persists after checking the configuration and parameters, the problem may be related to the CNC control electronics or drive modules. In such cases, professional diagnostics and repair of the Okuma control system may be required.