Diagnostics Toolkit

🔧 When Something Breaks, Speed Matters

A simple, repeatable diagnostic routine prevents guesswork and shortens downtime — especially when the problem is intermittent.

⏱️ 5-Minute Triage

• Is it one device, one machine/area, or system-wide?
  
  
• Check physical indicators — power, link/activity, drive faults
  
  
• Check comms health in PLC/SCADA — timeouts, retries, fault bits
  
  
• Check switch ports — errors, link flaps, utilization
  
  
• Confirm last known good and what changed (maintenance, wiring, updates)
  
  

🌐 Network Checks

• Port errors, duplex mismatches, and link flaps
  
  
• Broadcast/multicast issues (especially when adding devices)
  
  
• Time sync/time source consistency for event ordering
  
  
• Documentation: topology and addressing match reality
  
  

🔌 Device Checks

• Parameter drift — replaced device with default settings
  
  
• Power budget issues (especially on field devices)
  
  
• Noise/grounding issues on long runs or harsh environments
  
  
• Intermittent faults: capture timestamps and correlate with events
  
  

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