Mitsubishi Electronics manual 214

11 TROUBLESHOOTING

MELSEC-Q

Special Register List (Continue) (12) I/O module verification

																																Set by	Corresponding	Corresponding
Number	Name	Meaning													Explanation																	(When	ACPU
																																		CPU
																																set)	D9
SD1400			• When the power is turned on, the module numbers of the I/O																														D9116
SD1401			modules whose information differs from the registered I/O module																														D9117
SD1402		Bit pattern, in	information are set in this register (in units of 16 points).																														D9118
SD1403		units of 16 points,	(If the I/O numbers are set by parameter, the parameter-set																														D9119
SD1404		indicating the	numbers are stored.)																														D9120
SD1405	I/O module	modules with	• Also detects I/O module information																		5												D9121
				15	14		13		12		11		10		9		8		7	6			4	3		2		1		0
SD1406		verification errors.																															D9122
	verification		D9116	0		0		0		0		0		0		0		0	0	0		0	0		0		0		0		1	S (Error)		+Rem
		0: No I/O																													(X0Y)
SD1407																																	D9123
	error
		verification	D9117	0		0		0		0		0		0		1		0	0	0		0	0		0		0		0		0
SD1408																(190X Y)																	New
SD1409		errors	D9123	0		1		0		0		0		0		0		0	0	0		0	0		0		0		0		0
		1: I/O verification
to						(1FE0X Y )																											New to New
		error present										Indicates an I/O module verification error
SD1430
SD1431			• Not cleared even if the blown fuse is replaced with a new one.																														New
			This flag is cleared by error resetting operation.

(13)For redundant systems (Host system CPU information 1) for Q4AR only SD1510 to SD1599 are only valid for redundant systems.

They are all set to 0 for standalone systems.

					Set by	Corresponding	Corresponding
Number	Name	Meaning	Explanation			ACPU
					(When set)		CPU
						D9
SD1500		Basic period	• Set the basic period (1 second units) use for the process
	Basic period		control instruction using floating point data.		U	New
SD1501		tome	Floating points data = SD1501	SD1500
	Process control	Process control	• Shows the detailed error contents for the error that occurred		S (Error
SD1502	instruction detail	instruction detail				New
			in the process control instruction		occurrence)
	error code	error code
	Process control	Process control					Q4AR
SD1503	instruction	instruction	• Shows the error process block that occurred in the process		S (Error	New
	generated error	generated error	control instruction.		occurrence)
	location	location
	Operation mode	Hot start switch	• Shows the power out time (S) during the automatic switch
SD1512	during CPU start	power out time	from hot start to initial start in the operation mode when the		S (Initial)	New
	up		CPU module is started up.
SD1590	Switch request	Request origin	• Stores the request origin at work No. when the SM1590 is		S (Error	New
	network No.	network No.	turned on.		occurrence)

1 Host system CPU information is stored.

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