Using the LEDs to troubleshoot

The LEDs on the H1 and H1 with Integrated Power cards provide a great deal of information for troubleshooting fieldbus segments. Once communication has been established, use the LEDs to monitor communication between the card and fieldbus devices. The bottom two LEDs on the cards reflect communication between the port and fieldbus devices on that port.

Table: H1 card LEDs
LED correct operating condition	Fault indication	Possible causes and corrective action
Power/Active-On: Continuous green for the active card Flashing green for the standby card	Off	System power is not supplied to card due to a possible line power problem. Check the power connections.
	Off	Internal fault. Contact technical support
	Simplex (flashing) Redundant active and standby (flashing)	Incorrect terminal block for configured card type. Install a redundant terminal block for a redundant card and a simplex terminal block for a simplex card.
Error-Off	Red (continuous)	Controller is not scanning card. Check controller operation.
	Red (continuous)	Card failed self-test. Contact technical support.
	Red (flashing)	Controller is not scanning card. Check controller operation.
	Red (flashing)	Hardware error. Replace card with known good card of same type; contact technical support.
Port 1 and Port 2-On (yellow)	Off	No communications. Check connections, cable, and external devices.
		Port not enabled. Enable port.
		Configuration mismatch such as redundant card configured in database and simplex card installed. Fix configuration errors.
	Yellow (flashing)	Communication error on this port. Check connections, cable, and external devices.
	Yellow (flashing)	No configuration for this port. Configure port.

Table: H1 with Integrated Power card LEDs
LED correct operating condition	Fault indication	Possible causes and corrective action
Power/Active-On: Continuous green for the active card Flashing green for the standby card	Off	System power is not supplied to card due to a possible line power problem. Check the power connections.
	Off	Internal fault. Contact technical support
	Simplex (flashing) Redundant active and standby (flashing)	Incorrect terminal block for configured card type. Install a redundant terminal block for a redundant card and a simplex terminal block for a simplex card.
Error-Off	Red (continuous)	Controller is not scanning card. Check controller operation.
	Red (continuous)	Card failed self-test. Contact technical support.
	Red (flashing)	Controller is not scanning card. Check controller operation.
	Red (flashing)	Hardware error. Replace card with known good card of same type; contact technical support.
Port 1 and Port 2-On (yellow)	Off	No communications. Check connections, cable, and external devices.
		Port not enabled. Enable port.
		Configuration mismatch such as redundant card configured in database and simplex card installed. Fix configuration errors.
	Yellow (flashing)	Communication error on this port. Check connections, cable, and external devices.
	Yellow (flashing)	No configuration for this port. Configure port.
Port 1 and Port 2	Red (continuous)	Excessive current draw on the fieldbus segment. Check the field devices or the field wiring. If no field problem is found, replace the card.