Mitsubishi Electronics manual 165

11 TROUBLESHOOTING

MELSEC-Q

Special Relay List (Continued)

Number	Name	Meaning	Explanation	Set by	Corresponding	Applicable
				(When Set)	ACPU	CPU
					M9
	Memory card B		• Goes ON when access is made outside the range of file			Q2A (S1)
		OFF: Within access range	registers, R. of memory card B.			Q3A
SM673	file register			S/U	New
		ON : Outside access range	(Set within END processing.)			Q4A
	access range flag
			• Reset at user program			Q4AR

(6) Instruction-Related Special Relays

Number	Name		Meaning	Explanation	Set by	Corresponding	Applicable
					(When Set)	ACPU	CPU
						M9
		OFF: Carry OFF			S
SM700	Carry flag			• Carry flag used in application instruction	(Instruction	M9012
		ON : Carry ON
					execution)
	Number of output			• When SM701 is OFF, 16 characters of ASCII code are
SM701		OFF: 16 characters output		output.	U	M9049
	characters	ON : Outputs until NUL		• When SM701 is ON, output conducted until NUL (00H)
	selection
				code of ASCII code is encountered.
SM702	Search method	OFF: Search next		• Designates method to be used by search instruction.	U	New
		ON	: 2-part search	• Data must be arranged for 2-part search.
		OFF: Ascending order		• The sort instruction is used to designate whether data
SM703	Sort order			should be sorted in ascending order or in descending	U	New
		ON : Descending order
				order.
		OFF: Non-match found		• Goes ON when all data conditions have been met for the	S
SM704	Block comparison				(Instruction	New
		ON	: All match	BKCMP instruction.
					execution)
	Selection of real			• When SM707 is OFF, real number instructions are
SM707	number	OFF: Speed oriented		processed at high speed.	U	New	Q4AR
	instruction	ON	: Accuracy oriented	• When it is ON, real number instructions are processed
	processing type			with high accuracy.
	CHK instruction	OFF: Conditions priority		• Remains as originally set when OFF.	S
SM710	priority ranking				(Instruction	New
		ON	: Pattern priority	• CHK priorities updated when ON.
	flag				execution)
	Divided	OFF: Other than during		• In processing of AD57(S1), goes ON when screen is split	S
			divided processing
SM711	transmission			for transfer, and goes OFF when split processing is	(Instruction	M9065
		ON	: During divided
	status			completed	execution)
			processing
	Transmission	OFF: Batch processing		• In processing of AD57(S1), goes ON when canvas	S
SM712	processing				(Instruction	M9066
		ON	: Divided processing	screen is divided for transfer.
	selection				execution)
							QnA
		OFF: Communication
			request to remote
	Communication		terminal module	• Used to determine whether communications requests to	S
	request		enabled
SM714		ON		remote terminal modules connected to the AJ71PT32-S3	(Instruction	M9081
	registration area		: Communication	can be executed or not.	execution)
	BUSY signal		request to remote
			terminal module
			disabled
		OFF: During DI			S
SM715	EI flag			• ON when EI instruction is being executed.	(Instruction	New
		ON : During EI
					execution)
		OFF: Comment read not
SM720	Comment read	ON	completed	• Switches ON for only one scan when COMRD or PRC	S (Status	New
	completion flag		: Comment read	instruction is completed.	change)
			completed
	File being	OFF: File not accessed		• Switches ON while a file is being accessed by the	S (Status		QCPU
SM721				S.FWRITE, S.FREAD, COMRD, PRC, or LEDC		New
	accessed	ON	: File being accessed	instruction.	change)
	BIN/DBIN	OFF: Error detection
			performed	• Turned ON when "OPERATION ERROR" is suppressed
SM722	instruction error				U	New
		ON	: Error detection not	for BIN or DBIN instruction.
	disabling flag
			performed
		OFF: Request for
	BUSY signal for		communication with
			intelligent device
	CC-Link			• Used for determination whether to enable or disable the	S
			station enabled
SM730	communication			communication request for the intelligent device station	(Instruction	New	QnA
		ON	: Request for
	request			connected with A(1S)J61QBT11.	execution)
			communication with
	registration area
			intelligent device
			station disabled
11 - 49						11 - 49