Troubleshooting fieldbus loops

Before proceeding with troubleshooting confirm the following information:
  • Your devices are fieldbus-registered and Emerson-approved.

  • Your segment is properly terminated, grounded, and wired. Use the Fieldbus Segment Checkout Procedure to confirm these conditions.

  • The H1 card is communicating with the DeltaV system. Use the H1 card's LEDs to monitor communication between the card, controller, and devices.

  • The ports on the H1 card are enabled. Check that Enabled is selected on the Port Properties dialog in DeltaV Explorer.

  • Your devices are commissioned. Be sure that there are no yellow exclamation points ()on the device in the DeltaV Explorer or check the device state in DeltaV Diagnostics.

  • You have the most recent firmware updates for the H1 card and controller. Run the DeltaV Controller Update Utility to upgrade the firmware.

  • You have read the device documentation and know the function block parameter definitions and recommended values and other configuration options for your device.

  • You have the most recent version of the FOUNDATION fieldbus specification for reference. Visit the Fieldbus Foundation website at www.fieldbus.org to learn how to get the most recent version of the specification.