Omron CJ1W-DRM21 Master Status 1 Word n+12, Word n+12 n = CIO 1,500 + 25 x unit number

Allocated CIO Area WordsSection 3-2

3-2-7		Master Status 1 (Word n+12)
Word n+12 [n = CIO 1,500 + (25 x unit number)]
Bit	Name		Status	Controlled	Unit operation
				by
00	Verification		ON	Unit	Indicates that the data in the slave registered in the scan list is different
	Error Flag				from the data from the actual slave. It occurs with the scan list enabled.
			OFF	Unit	Indicates that a verification error has not occurred or turns OFF when a
					verification error is cleared.
01	Structure		ON	Unit	Indicates that I/O allocations cannot be made with the scan list disabled.
	Error Flag
			OFF	Unit	Indicates that a structure error has not occurred or turns OFF when a
					structure error is cleared.
02	Remote I/O		ON	Unit	Indicates that a remote I/O communications timeout has occurred during
	Communica-				remote I/O communications with slaves.
	tions Error				Remote I/O communications will stop if DIP switch pin 3 (remote I/O com-
	Flag
					munications stop/continue setting for communications errors) on the front
					panel is ON (stop).
					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.
03	Reserved by		---	---	---
	system
04	Invalid Scan		ON	Unit	Indicates that there is incorrect data in the scan list (mismatched check-
	List Data				sum). Remote I/O communications in the Unit will stop. (Slave operations
	Flag				and message communications will continue.)
			OFF	Unit	Indicates that the scan list data is correct.
					Turns OFF when an incorrect scan list data error occurs and then the cor-
					rect scan list is registered.
05	Remote I/O		ON	Unit	Indicates that the I/O memory in the CPU Unit that is to be refreshed is not
	Refresh				present during I/O refreshing for the master. It occurs in several situations,
	Error Flag				such as when an I/O area is allocated in an EM bank that is not present.
			OFF	Unit	Indicates that no master I/O refresh errors have occurred.
06	Reserved by		---	---	---
to	system
07
08	Master		ON	Unit	Indicates that an error has occurred in one of the following operations:
	Function				• Master enable (word n, bit 06)
	Enable/
					• Master stop (word n, bit 07)
	Disable
					Once this bit turns ON, it will remain ON until the operation is successfully
	Failed Flag
					completed.
			OFF	Unit	Indicates that the error has not occurred. The bit turns OFF when the
					operation is successfully completed.
09	User		ON	Unit	Indicates that an error has occurred in one of the following operations:
	Allocation				• Master user-set allocations user setting (word n, bit 11)
	Area Setting
					Once this bit turns ON, it will remain ON until the operation is successfully
	Failed Flag
					completed.
					Details on the master user-set allocation results are output to the Master
					User Allocations Setup Table.
			OFF	Unit	Indicates that the error has not occurred. The bit turns OFF when the
					operation is successfully completed.

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