Self-Diagnosis

On the shop floor, Self-Diagnosis can be understood as: System self-check of its own status. A disciplined response prevents repeating the same stop condition. Managed well, it improves process repeatability and lowers correction workload. Use alarm history with process context to distinguish root events from secondary symptoms.

Engineering Significance

Do not tune this in isolation. Stable outcomes come from balancing machine behavior, fixturing response, and metrology feedback at the same time.

How to Apply It

• Escalate repeating faults with trend evidence to maintenance.
• Re-verify safety functions after electrical or control service.
• Capture alarm context before reset: code, axis state, and recent blocks.

Typical Pitfalls

Fast reset culture hides intermittent faults and increases safety exposure. Repeated alarms often involve process triggers, not only hardware failure.

Audit Points

• Verify tool and position state before cycle resume.
• Document corrective action and recurrence outcome.
• Separate electrical, mechanical, and program evidence.