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Troubleshooting

Common Errors​

Error Code 0x04 - Path Segment Error:

  • Invalid tag path specified
  • Check tag names in PLC program
  • Verify tag paths match exactly (case-sensitive)
  • Ensure tag exists in controller

Error Code 0x08 - Service Not Supported:

  • ControlLogix/GuardLogix: Connected to wrong slot
  • Verify processor slot number in backplane
  • Check backplane configuration in adapter script

Connection Timeouts:

  • Scan interval too high for controller
  • CompactLogix has short timeout (~128ms)
  • Try reducing scan-interval to 0.1
  • Note: Lower scan interval may increase PLC load (test carefully)

No Data Appearing:

  • Verify tags exist in PLC program
  • Check tag paths are correct (case-sensitive)
  • Test with simpler configuration first
  • Use RSLinx or similar tool to verify tags are accessible

Wrong Controller Type:

  • Verify you're using the correct adapter
  • MicroLogix: NOT supported with this adapter (use Modbus if available)
  • SLC500: Use the dedicated Allen Bradley SLC500 adapter instead