Delta Electronics RTU-DNET manual LED Indicator & Trouble-shooting, Power LED

DeviceNet Remote I/O Communication Module RTU-DNET

6 LED Indicator & Trouble-shooting

There are five LED indicators on RTU-DNET. POWER LED displays if the power of RTU-DNET is working normally. RUN LED displays the working status of RTU-DNET. ALRAM LED shows if RTU-DNET is operating normally. NS LED and MS LED display the communication connection status of RTU-DNET.

6.1	POWER LED
		LED status	Indication		How to correct
		Off	Power is abnormal.	Make sure RTU-DNET is powered.
		Green light on	Power is normal.	--
6.2	NS LED
		LED status	Indication		How to correct
				1.	Make sure RTU-DNET is powered.
				2.	Make sure the nodes on the bus are
			No power or duplicate ID		communicating normally.
		Off		3.	Make sure at least 1 node or more are
			check has not completed.		communicating on the network through
					RTU-DNET.
				4.	Check if the baud rate of RTU-DNET is the
					same as that of the master.
		Green light blinking	On-line but not connected to	--
			DeviceNet
		Green light on	On-line and connected to	--
			DeviceNet normally
		Red light blinking	On-line but I/O connection	--
			timed-out
				1.	Make sure all the devices have their unique
					node address.
			Network error, cannot check	2.	Check the network for correcting media
		Red light on	duplicate ID, no network		installation and baud rate.
			power or bus-off	3.	Check if the node address of RTU-DNET is
					valid.
				4.	Check if the network power is normal.
6.3	MS LED
		LED status	Indication		How to correct
		Off	No power or off-line	Make sure RTU-DNET is powered.
			Waiting for I/O data, no I/O	Switch the PLC to RUN status and start I/O data
		Green light blinking	data or PLC is in STOP
				exchange.
			mode.
		Green light on	I/O data are normal.	--
		Red light blinking	No network power;	1.	Check if the network power is normal.
			configuration error	2.	Reset the parameters in RTU-DNET.
		Red light on	Hardware error	Send your RTU-DNET back to the factory for repair.
6.4	ALARM LED
		LED status	Indication		How to correct
		Off	Normal	--
		Red light blinking	RTU-DNET detects low	1. Make sure RTU-DNET is powered.

DVP-PLC Application Manual 31