Omron CS1W-DRM21, CJ1W-DRM21 Itored from I/O Data Communications Flag word n+12 bit

Allocated CIO Area Words				Section 3-2
Bit	Name	Status	Controlled	Unit operation
			by
01	Remote I/O	ON	Unit	Indicates that remote I/O communications are being performed for the
	Communica-			master function. Normally, the Unit will perform remote I/O communica-
	tions Flag			tions automatically.
				Note This bit only indicates the start of remote I/O communications, and
				does not indicate whether data has actually been exchanged with
				slaves. Actual data exchange between one or more slaves is mon-
				itored from I/O Data Communications Flag (word n+12 bit 15).
				Therefore use I/O Data Communications Flag rather than this bit
				as the input condition in I/O processing for slaves from the ladder
				program.
		OFF	Unit	Indicates remote I/O communications have stopped. This bit turns OFF in
				order to stop communications under the following conditions:
				• No slaves are registered in the scan list.
				• Invalid Setup Data Flag (word n+12, bit 04)
				• A remote I/O communications error or sending error (network power er-
				ror or send timeout error) occurred with DIP switch pin 3 (remote I/O
				communications stop/continue setting for communications errors) on
				the front panel turned ON.
				• The remote I/O Communications Stop Switch (word n, bit 04) is ON.
02	Reserved by	---	---	---
	system
03	Master	ON	Unit	Indicates that master communications are enabled (Unit is operating as a
	Function			Master) (default setting).
	Enabled
		OFF	Unit	Indicates that master communications are disabled.
	Flag
04	Scan List	ON	Unit	Indicates that the Unit is operating with the scan list disabled (default set-
	Disabled			ting).
	Flag
		OFF	Unit	Indicates that the Unit is operating with the scan list enabled.
05	Reserved by	---	---	---
	system
06	Automatic	ON	Unit	Indicates that the connection type was automatically set in the slave scan
	Slave			list.
	Connection			This flag is valid only with slave communications enabled.
	Flag
		OFF	Unit	Indicates that the connection type was set from the Configurator in the
				slave scan list.
				Note The type of connection in slave communications cannot be speci-
				fied without the Configurator. If it is not set from the Configurator, it
				will be set automatically.
07	Slave Func-	ON	Unit	Indicates that slave communications are enabled.
	tion Enabled
		OFF	Unit	Indicates that slave communications are disabled (default setting).
	Flag
08	File Read/	ON	Unit	Indicates that an error has occurred when user setup data is read from a
	Write Error			Memory Card in the CPU Unit or when data is written as a file to a Mem-
	Flag			ory Card.
		OFF	Unit	Indicates that the error has not occurred. Turns OFF when the Unit has
				successfully completed the operation.
09	Reserved by	---	---	---
to	system
14
15	Error His-	ON	Unit	Indicates that an error history has been registered. Turns ON at the first
	tory Flag			error history for the Unit.
		OFF	Unit	Indicates that no errors have been registered in the error history. Turns
				OFF when the Unit receives an error history clear request.

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