Mitsubishi Electronics Q172DCPU, Q173DCPU APPENDICES, Table 1.1 Special relay list

APPENDICES

Table 1.1 Special relay list

No.	Name		Meaning	Details	Set by	Remark
					(When set)
				• Turn ON if an error occurs as a result of diagnosis.
				• Remains ON even if the condition is restored to normal
SM0	Diagnostic error	OFF : No error		thereafter.
		ON	: Error	• Turn ON by ON to OFF of the Motion error detection flag
				(M2039) for except the stop error after confirming the error
				content.
				• Turn ON if an error occurs as a result of self-diagnosis.
				• Remains ON even if the condition is restored to normal
SM1	Self-diagnostic error	OFF : No self-diagnostic error		thereafter.
		ON	: Self-diagnostic error	• Turn ON by ON to OFF of the Motion error detection flag
				(M2039) for except the stop error after confirming the error
				content.
				• Turn ON if the voltage of external battery reduces to less than
SM51	Battery low latch	OFF : Normal		2.5[V].
		ON	: Battery low	• Remains ON even if the condition is restored to normal
				thereafter.
				• Turn on when the voltage of the external battery reduces to
SM52	Battery low	OFF	: Normal	less than 2.5[V].
		ON	: Battery low	• Turn OFF when the voltage of external battery returns to
					S (Occur an error)
				normal.
				• Turn ON if an instantaneous power failure of within 20[ms]
		OFF : AC/DC DOWN		occurs during use of the AC power supply module.
SM53	AC/DC DOWN		not detected	Reset when the power supply is switched OFF, then ON.
	detection	ON		• Turn ON if an instantaneous power failure of within 10[ms]
			: AC/DC DOWN
			detected	occurs during use of the AC power supply module.
				Reset when the power supply is switched OFF, then ON.
				• Turn ON if the voltage of external battery reduces to less than
SM58	Battery low warning	OFF : Normal		2.7[V].
	latch	ON	: Battery low	• Remains ON even if the condition is restored to normal
				thereafter.
				• Turn on when the voltage of the external battery reduces to
SM59	Battery low warning	OFF : Normal		less than 2.7[V].
		ON	: Battery low	• Turn OFF when the voltage of external battery returns to
				normal.
				• Turn ON if there is at least one output module whose fuse
SM60	Fuse blown detection	OFF : Normal		has blown.
		ON	: Module with blown fuse	• Remains ON even if the condition is restored to normal
				thereafter.
SM211	Clock data error	OFF	: No error	• Turn ON if an error occurs in clock data (SD210 to SD213)	S (Request)
		ON	: Error	value, and turn OFF if no error is detected.
		OFF : CPU No.1 READY
SM220	CPU No.1 READY		incompletion	• Turn ON if CPU No. 1 which uses Multiple CPU high speed
(Note-1)	complete	ON	: CPU No.1 READY	bus can be operated between Multiple CPU.
			completion
		OFF : CPU No.2 READY
SM221	CPU No.2 READY		incompletion	• Turn ON if CPU No. 2 which uses Multiple CPU high speed
(Note-1)	complete	ON	: CPU No.2 READY	bus can be operated between Multiple CPU.
			completion
		OFF : CPU No.3 READY
SM222	CPU No.3 READY		incompletion	• Turn ON if CPU No. 3 which uses Multiple CPU high speed
(Note-1)	complete	ON	: CPU No.3 READY	bus can be operated between Multiple CPU.	S (Change status)
			completion
		OFF : CPU No.4 READY
SM223	CPU No.4 READY		incompletion	• Turn ON if CPU No. 4 which uses Multiple CPU high speed
(Note-1)	complete	ON	: CPU No.4 READY	bus can be operated between Multiple CPU.
			completion
SM240	No.1 CPU resetting	OFF : CPU No.1 reset cancel		• Goes OFF when reset of the CPU No.1 is cancelled.
		ON	: CPU No.1 resetting
SM241	No.2 CPU resetting	OFF : CPU No.2 reset cancel		• Goes OFF when reset of the CPU No.2 is cancelled.
		ON	: CPU No.2 resetting
SM242	No.3 CPU resetting	OFF : CPU No.3 reset cancel		• Goes OFF when reset of the CPU No.3 is cancelled.
		ON	: CPU No.3 resetting

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