Omron CJ1W-DRM21 Status Indicators MS and NS, Indi Color Status Meaning likely errors, Off

Nomenclature and Functions Section 2-1

2. Two-digit, 7-segment display

MS

1. Status indicators

NS

3. Dot indicators

2-1-2 Status Indicators: MS and NS

The MS (Module Status) indicator indicates the status of the node itself and the NS (Network Status) indicator indicates the status of the network.

The MS and NS indicators can be green or red and they can be OFF, ON, or flashing (alternating 0.5-s ON and 0.5-s OFF.) The following table shows the meaning of these indicator conditions.

Indi-	Color	Status	Meaning (likely errors)
cator
MS	Green	ON	Normal operating status
			Communications are being performed normally.
	Red	ON	A non-recoverable, fatal error has occurred.
			(Watchdog timer error, memory error, or system error.)
			Replace the DeviceNet Unit.
		Flashing	A recoverable, non-fatal error has occurred. (Structure
			error, switch setting error, PC initialization error, PC inter-
			face error, or routing table error.)
			Correct the error and reset the Unit.
	---	OFF	Power isn’t being supplied or the Unit is being reset.
NS	Green	ON	The Unit is online with the network and remote I/O com-
			munications have been established with a slave regis-
			tered in the scan list or message communications have
			been established.
		Flashing	The Unit is online with the network, but neither remote I/
			O communications nor message communications have
			been established. Either the scan list is being read, or
			both remote I/O communications and message commu-
			nications are disabled.
	Red	ON	A fatal communications error has occurred. Network
			communications are not possible.
			(Node address duplicated or Bus Off error)
		Flashing	A non-fatal communications error has occurred. (Com-
			munications error, setup error, or verification error)
	---	OFF	The Unit is not online with the network.
			(There is no network power supply, the Unit is being
			reset, a minor failure, or a sending error has occurred.)

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