Omron CS1W-DRM21, CJ1W-DRM21 operation manual Troubleshooting with the DeviceNet Unit Indicators

Troubleshooting with the DeviceNet Unit Indicators Section 9-1

9-1 Troubleshooting with the DeviceNet Unit Indicators

9-1-1 Determining Operating Status from the Indicators

The following table shows the status of the MS and NS indicators and the 7- segment display during normal operation.

	Indicator status		Network/Unit status	Comments
MS	NS	7-segment
OFF	OFF	OFF	Initializing with PC	Initialization processing with the PC is in progress.
				Restart the DeviceNet Unit if this status continues
				for an extended period of time. Replace the CPU
				Unit and/or DeviceNet Unit if the problem is not cor-
				rected by restarting.
ON	OFF	Master’s node	Checking for node address	The node address duplication check is performed
(green)		address	duplication	after initialization.
		(flashing)
ON	Flashing	Master’s node	Waiting for remote I/O com-	The Unit will have this status until remote I/O com-
(green)	(green)	address	munications	munications are performed with the master or slave
		(flashing)		function. (When both functions are operating, the
				Unit will have this status until remote I/O communi-
				cations are performed with either function.)
		Master’s node	Waiting for message commu-	The Unit will have this status when both the master
		address	nications connection	and slave functions are disabled and the Unit is
				waiting for a connection by message communica-
				tions.
ON	ON	Master’s node	Remote I/O or message com-	This is the normal display when the master and/or
(green)	(green)	address	munications in progress.	slave is active.
ON	ON	- - (flashing)	Scan list operation in	The scan list is being saved in flash memory or the
(green)	(green)		progress.	scan list is being cleared.

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