Omron CJ1W-DRM21, CS1W-DRM21 operation manual Cos

Allocated DM Area Words				Section 3-3
Bit	Name	Status	Controlled	Unit operation
			by
03, 11	Slave	ON	Unit	Indicates that an error has occurred in remote I/O communications
	Remote I/O			with the Slave.
	Communica-			This bit turns ON if a timeout occurs in at least one connection with
	tions Error
				multiple connections set.
	Flag
				This error occurs with the scan list enabled or disabled.
		OFF	Unit	Indicates that a remote I/O communications error has not occurred
				or turns OFF when a remote I/O communications error is cleared.
04, 12	Reserved by	---	---	---
	system
05, 13	Master COS	ON	Unit	Indicates that COS sent to a slave destination failed.
	Send Fail-			Use the Master COS Send Switch (n+2/n+3/n+4/n+5 words) to send
	ure Flag
				COS.
				The following may be cause failure of COS signal transmission.
				• Remote I/O communications stopped
				• A COS connection was not established
				• Bus OFF has occurred.
				• A network power error has occurred.
				• A send timeout has occurred.
				Once this bit turns ON, it will remain ON until the operation is suc-
				cessfully completed.
		OFF	Unit	Indicates that the error has not occurred. The bit turns OFF when
				COS is successfully sent.
06, 14	Scan List	ON	Unit	Indicates that the slave is registered in the scan list.
	Registration
		OFF	Unit	The Unit is operating with the scan list disabled or the Unit is not reg-
	Flag
				istered in the scan list.
07, 15	Remote I/O	ON	Unit	Indicates that normal remote I/O communications were conducted
	Communica-			with the slaves at all set connections.
	tions Flag			This bit turns OFF if a timeout occurs in at least one connection with
				multiple connections set.
		OFF	Unit	Indicates that remote I/O communications failed (no slave present,
				no scan list registered, verification error, structure error) or that a
				communications error is occurring.

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