505

Press SYSTEM > CURRENT POS and verify the absolute machine coordinate position of the affected axis (n). Note the current position value.

Press SYSTEM > PARAM and check Parameter 1325 (Stored Stroke Check III negative side) for the affected axis. Compare this limit value with the current machine position from step 1.

If the current position exceeds Parameter 1325, manually jog the axis in the positive direction using MPG or incremental jog mode to bring it within limits. You may need to hold RESET while jogging to override the alarm.

Ensure no physical obstructions exist before jogging. Move slowly to prevent collisions.

If Parameter 1325 value is incorrect for your machine travel, adjust it to the proper negative limit value based on machine specifications. Set Parameter 0013 bit 7 (SLC bit) to 1 to enable Parameter 1325 stored stroke check if disabled.

Parameter write enable (PWE) bit 0 of Parameter 0000 must be set to 1 to modify parameters. Return PWE to 0 after changes.

Check ALARM HISTORY (ALARM > HISTORY) for recent battery alarms (APC, APZ 1815, 1816) or position-related alarms (410, 411) that may indicate absolute position loss.

Press SYSTEM > DIAGNOSIS and check Diagnostic 300 (Absolute position status) for the affected axis. A value of 0 indicates position reference is lost and requires return to reference point.

If absolute reference is lost, perform manual reference return: Press RESET, select REF RETURN mode, select the affected axis, and execute reference return sequence at appropriate feedrate.

Ensure machine is clear of obstructions. Reference return may move the axis to its home position limit switch.

After successful reference return, verify Diagnostic 300 shows position established and check SYSTEM > CURRENT POS that machine coordinates are within Parameter 1325 limits.

Press OFFSET SETTING > WORK and review all active work coordinate offsets (G54-G59) for the affected axis. Note which offset is currently active in the program status display.

Press PROGRAM > CURRENT and identify the program block that triggered the alarm. Calculate the absolute machine position: Program coordinate + Active work offset + External offset (if any) = Machine position.

Compare the calculated machine position from step 2 against Parameter 1325 negative limit. If the commanded move exceeds limits, modify either the program coordinates or the work offset values to keep within travel limits.

If modification is not possible, temporarily adjust Parameter 1325 to accommodate the required travel, or check Parameter 1320 (OT check) to verify stored stroke check settings are appropriate for your application.

Ensure physical machine travel limits and limit switches can safely accommodate any Parameter 1325 adjustments.