MELSEC Accessible Registers

Accessible Registers

The accessible registers of this product are shown below. The I/O address of MELSEC is specified by "register name" + "number". For details on the register, refer to the manual for each CPU.

In the MELSEC and its manual, I/O address and register is called “device”.
Digit specification for BIT type register is not available.

List of Registers (RCPU)

Classification	Register Name	Register Type	Notation	Support Availability	Remarks
RnCPU, RnPCPU, RnENCPU	B	BIT	Hexadecimal	Available
	BL	-	Decimal	Unavailable
	BL\S			Unavailable
	BL\TR			Unavailable
	C	WORD	Decimal	Available	Able to obtain a current value (CN)
	CC	BIT	Decimal	Unavailable	Coil
	CN	WORD	Decimal	Unavailable	Current value
	CS	BIT	Decimal	Unavailable	Contact
	D	WORD	Decimal	Available
	D	BIT	Decimal	Available	Bit specification
	DX			Unavailable
	DY			Unavailable
	E			Unavailable
	F	BIT	Decimal	Available
	FD	WORD	Decimal	Unavailable
	FX	BIT	Hexadecimal	Unavailable
	FY	BIT	Hexadecimal	Unavailable
	GV:	WORD	Hexadecimal	Available	Label memory (Global label) *2
	GV:	BIT	Hexadecimal	Available	Label memory (Global label) *2 Bit specification
	H			Unavailable
	I	-	Decimal	Unavailable	Non-monitorable device
	J	-	Decimal	Unavailable	Non-monitorable device
	J*\X	BIT	Hexadecimal	Available
	J*\Y	BIT	Hexadecimal	Available
	J*\B	BIT	Hexadecimal	Available
	J*\SB	BIT	Hexadecimal	Available
	J*\SW	WORD	Hexadecimal	Available
	J*\SW	BIT	Hexadecimal	Available	Bit specification
	J*\W	WORD	Hexadecimal	Available
	J*\W	BIT	Hexadecimal	Available	Bit specification
	K			Unavailable
	U*\G	WORD	Decimal	Available
	U*\G	BIT	Decimal	Available	Bit specification
	U3En\G	WORD	Decimal	Available
	U3En\G	BIT	Decimal	Available	Bit specification
	U3En\HG	WORD	Decimal	Unavailable	Non-monitorable device
	U3En\HG	BIT	Decimal	Available	Bit specification
	L	BIT	Decimal	Available
	LC	DWORD	Decimal	Available	Able to obtain a current value (LCN)
	LCC	BIT	Decimal	Unavailable	Coil
	LCN	DWORD	Decimal	Unavailable	Current value
	LCS	BIT	Decimal	Unavailable	Contact
	LST	DWORD	Decimal	Available	Able to obtain a current value (LSTN)
	LSTC	BIT	Decimal	Unavailable	Coil
	LSTN	DWORD	Decimal	Unavailable	Current value
	LSTS	BIT	Decimal	Unavailable	Contact
	LT	DWORD	Decimal	Available	Able to obtain a current value (LTN)
	LTC	BIT	Decimal	Unavailable	Coil
	LTN	DWORD	Decimal	Unavailable	Current value
	LTS	BIT	Decimal	Unavailable	Contact
	LZ	DWORD	Decimal	Unavailable*1	Long index register
	M	BIT	Decimal	Available
	N	-	Decimal	Unavailable	Non-monitorable device
	P	-	Decimal	Unavailable	Non-monitorable device
	R	WORD	Decimal	Available
	R	BIT	Decimal	Available	Bit specification
	RD	WORD	Decimal	Unavailable*1	Refresh data register
	RD	BIT	Decimal	Unavailable*1	Refresh data register
	S	BIT	Decimal	Unavailable	Non-monitorable device
	SB	BIT	Hexadecimal	Available
	SD	WORD	Decimal	Available
	SD	BIT	Decimal	Available	Bit specification
	SM	BIT	Decimal	Available
	ST	WORD	Decimal	Available	Able to obtain a current value (STN)
STC	BIT	Decimal	Unavailable	Coil
STN	WORD	Decimal	Unavailable	Current value
STS	BIT	Decimal	Unavailable	Contact
SW	WORD	Hexadecimal	Available
SW	BIT	Hexadecimal	Available	Bit specification
T	WORD	Decimal	Available	Able to obtain a current value (TN)
TC	BIT	Decimal	Unavailable	Coil
TN	WORD	Decimal	Unavailable	Current value
TS	BIT	Decimal	Unavailable	Contact
TR	-	Decimal	Unavailable	Non-monitorable device
U	-	Hexadecimal	Unavailable	Non-monitorable device
V	BIT	Decimal	Unavailable*1
W	WORD	Hexadecimal	Available
W	BIT	Hexadecimal	Available*3	Bit specification
X	BIT	Hexadecimal	Available
Y	BIT	Hexadecimal	Available
Z	WORD	Decimal	Unavailable*1	Index register
ZR	WORD	Decimal	Available
ZR	BIT	Decimal	Available	Bit specification
RnPSFCPU	B	BIT	Hexadecimal	Available
	BL	-	Hexadecimal	Unavailable
	BL\S			Unavailable
	BL\TR			Unavailable
	C	WORD	Decimal	Available	Able to obtain a current value (CN)
	CC	BIT	Decimal	Unavailable	Coil
	CN	WORD	Decimal	Unavailable	Current Value
	CS	BIT	Decimal	Unavailable	Contact
	D	WORD	Decimal	Available
	D	BIT	Decimal	Available	Bit specification
	DX			Unavailable
	DY			Unavailable
	E			Unavailable
	F	BIT	Decimal	Available
	FD	WORD	-	Unavailable
	FX	-	-	Unavailable
	FY	-	-	Unavailable
	GV:	WORD	Hexadecimal	Available	Label memory (Global label) *2
	GV:	BIT	Hexadecimal	Available	Label memory (Global label) *2 Bit specification
	I	-	Decimal	Unavailable	Non-monitorable device
	J	-	Decimal	Unavailable	Non-monitorable device
	J*\X	BIT	Hexadecimal	Available
	J*\Y	BIT	Hexadecimal	Available
	J*\B	BIT	Hexadecimal	Available
	J*\SB	BIT	Hexadecimal	Available
	J*\W	WORD	Hexadecimal	Available
	J*\W	BIT	Hexadecimal	Available	Bit specification
	J*\SW	WORD	Hexadecimal	Available
	J*\SW	BIT	Hexadecimal	Available	Bit specification
	K			Unavailable
	U*\G	WORD	Decimal	Available
	U*\G	BIT	Decimal	Available	Bit specification
	U3En\G	WORD	Decimal	Available
	U3En\G	BIT	Decimal	Available	Bit specification
	U3En\HG	WORD	Decimal	Unavailable	Non-monitorable device
	U3En\HG	BIT	Decimal	Available	Bit specification
	L	BIT	Decimal	Available
	LC	DWORD	Decimal	Available	Able to obtain a current value (LCN)
	LCC	BIT	Decimal	Unavailable	Coil
	LCN	DWORD	Decimal	Unavailable	Current value
	LCS	BIT	Decimal	Unavailable	Contact
	LST	DWORD	Decimal	Available	Able to obtain a current value (LSTN)
	LSTC	BIT	Decimal	Unavailable	Coil
	LSTN	DWORD	Decimal	Unavailable	Current value
	LSTS	BIT	Decimal	Unavailable	Contact
	LT	DWORD	Decimal	Available	Able to obtain a current value (LTN)
	LTC	BIT	Decimal	Unavailable	Coil
	LTN	DWORD	Decimal	Unavailable	Current value
	LTS	BIT	Decimal	Unavailable	Contact
	LZ	DWORD	Decimal	Unavailable*1	Long index register
	M	BIT	Decimal	Available
	N	-	Decimal	Unavailable	Non-monitorable device
	P	-	Decimal	Unavailable	Non-monitorable device
	R	WORD	Decimal	Available
	R	BIT	Decimal	Available	Bit specification
	RD	WORD	Decimal	Unavailable*1	Refresh data register
	RD	BIT	Decimal	Unavailable*1	Refresh data register
	S	BIT	Decimal	Unavailable	Non-monitorable device
	SA\B	BIT	Hexadecimal	Available*2
	SA\C	WORD	Decimal	Available	Able to obtain a current value (SA/CN)
	SA\CC	BIT	Decimal	Available*2	Coil
	SA\CN	WORD	Decimal	Available*2	Current value
	SA\CS	BIT	Decimal	Available*2	Contact
	SA\D	WORD	Decimal	Available*2
SA\D	BIT	Decimal	Available*2	Bit specification
SA\M	BIT	Decimal	Available*2
SA\SD	WORD	Decimal	Available*2
SA\SD	BIT	Decimal	Available*2	Bit specification
SA\SM	BIT	Decimal	Available*2
SA\ST	WORD	Decimal	Available	Able to obtain a current value (SA/STN)
SA\STC	BIT	Decimal	Available*2	Coil
SA\STN	WORD	Decimal	Available*2	Current value
SA\STS	BIT	Decimal	Available*2	Contact
SA\T	WORD	Decimal	Available	Able to obtain a current value (SA/TN)
SA\TC	BIT	Decimal	Available*2	Coil
SA\TN	WORD	Decimal	Available*2	Current value
SA\TS	BIT	Decimal	Available*2	Contact
SA\W	WORD	Hexadecimal	Available*2
SA\W	BIT	Hexadecimal	Available*2	Bit specification
SA\X	BIT	Hexadecimal	Available*2
SA\Y	BIT	Hexadecimal	Available*2
SB	BIT	Hexadecimal	Available
SD	WORD	Decimal	Available
SD	BIT	Decimal	Available	Bit specification
SM	BIT	Decimal	Available
ST	WORD	Decimal	Available	Able to obtain a current value (STN)
STC	BIT	Decimal	Available	Coil
STN	WORD	Decimal	Available	Current value
STS	BIT	Decimal	Available	Contact
SW	WORD	Hexadecimal	Available
SW	BIT	Hexadecimal	Available	Bit specification
T	WORD	Decimal	Available	Able to obtain a current value (TN)
TC	BIT	Decimal	Available	Coil
TN	WORD	Decimal	Available	Current value
TS	BIT	Decimal	Available	Contact
TR	-	Decimal	Unavailable	Non-monitorable device
U	-	Hexadecimal	Unavailable	Non-monitorable device
V	BIT	Decimal	Unavailable*1	Edge relay
W	WORD	Hexadecimal	Available
W	BIT	Hexadecimal	Available	Bit specification
X	BIT	Hexadecimal	Available
Y	BIT	Hexadecimal	Available
Z	WORD	Decimal	Unavailable*1	Index register
ZR	WORD	Decimal	Available
ZR	BIT	Decimal	Available	Bit specification

*1 Supported by MX OPC Server UA, but unsupported by SCADA because these registers are usually not monitored.

*2 Safety registers can only be set to "read".

*3 Do not change the Global label (GV: *) address because it will be reflected in the configuration screen by file import.

List of Registers (RnSFCPU)

Classification	Register Name	Register Type	Notation	Support Availability	Remarks
RnSFCPU	B	BIT	Hexadecimal	Available
	BL		Decimal	Unavailable
	BL\S			Unavailable
	BL\TR			Unavailable
	C	WORD	Decimal	Available	Able to obtain a current value (CN)
	CC	BIT	Decimal	Available	Coil
	CN	WORD	Decimal	Available	Current Value
	CS	BIT	Decimal	Available	Contact
	D	WORD	Decimal	Available
	D	BIT	Decimal	Available	Bit specification
	DX			Unavailable
	DY			Unavailable
	E			Unavailable
	F	BIT	Decimal	Available
	FD	WORD		Unavailable
	FX			Unavailable
	FY			Unavailable
	GV:	WORD	Hexadecimal	Available	Label memory (Global label) *2
	GV:	BIT	Hexadecimal	Available	Label memory (Global label) *2 Bit specification
	H			Unavailable
	I		Decimal	Unavailable	Non-monitorable device
	J		Decimal	Unavailable	Non-monitorable device
	J*n\X	BIT	Hexadecimal	Available
	J*n\Y	BIT	Hexadecimal	Available
	J*n\B	BIT	Hexadecimal	Available
	J*n\SB	BIT	Hexadecimal	Available
	J*n\W	WORD	Hexadecimal	Available
	Jn\W	BIT	Hexadecimal	Available	Bit specification
	J*n\SW	WORD	Hexadecimal	Available
	J*n\SW	BIT	Hexadecimal	Available	Bit specification
	K			Unavailable
	U*n\G	WORD	Decimal	Available
	U*n\G	BIT	Decimal	Available	Bit specification
	U3E*n\G	WORD	Decimal	Available
	U3En\G	BIT	Decimal	Available	Non-monitorable device
	U3E*n\HG	WORD	Decimal	Available
	U3En\HG	BIT	Decimal	Available	Bit specification
	L	BIT	Decimal	Available
	LC	DWORD	Decimal	Available	Able to obtain a current value (LCN)
	LCC	BIT	Decimal	Available	Coil
	LCN	DWORD	Decimal	Available	Current value
	LCS	BIT	Decimal	Available	Contact
	LST	DWORD	Decimal	Available	Able to obtain a current value (LSTN)
	LSTC	BIT	Decimal	Available	Coil
	LSTN	DWORD	Decimal	Available	Current value
	LSTS	BIT	Decimal	Available	Contact
	LT	DWORD	Decimal	Available	Able to obtain a current value (LTN)
	LTC	BIT	Decimal	Available	Coil
	LTN	DWORD	Decimal	Available	Current value
	LTS	BIT	Decimal	Available	Contact
	LZ	DWORD	Decimal	Unavailable*1	Long index register
	M	BIT	Decimal	Available
	N		Decimal	Unavailable	Non-monitorable device
	P		Decimal	Unavailable	Non-monitorable device
	R	WORD	Decimal	Available
	R	BIT	Decimal	Available	Bit specification
	RD	WORD	Decimal	Unavailable*1	Refresh data register
	RD	BIT	Decimal	Unavailable*1	Refresh data register
	S	BIT	Decimal	Unavailable	Non-monitorable device
	SA\B	BIT	Hexadecimal	Available*2
	SA\C	WORD	Decimal	Available	Able to obtain a current value (SA/CN)
	SA\CC	BIT	Decimal	Available*2	Coil
	SA\CN	WORD	Decimal	Available*2	Current value
	SA\CS	BIT	Decimal	Available*2	Contact
SA\D	WORD	Decimal	Available*2
SA\D	BIT	Decimal	Available*2	Bit specification
SA\M	BIT	Decimal	Available*2
SA\SD	WORD	Decimal	Available*2
SA\SD	BIT	Decimal	Available*2	Bit specification
SA\SM	BIT	Decimal	Available*2
SA\ST	WORD	Decimal	Available	Able to obtain a current value (SA/STN)
SA\STC	BIT	Decimal	Available*2	Coil
SA\STN	WORD	Decimal	Available*2	Current value
SA\STS	BIT	Decimal	Available*2	Contact
SA\T	WORD	Decimal	Available	Able to obtain a current value (SA/TN)
SA\TC	BIT	Decimal	Available*2	Coil
SA\TN	WORD	Decimal	Available*2	Current value
SA\TS	BIT	Decimal	Available*2	Contact
SA\W	WORD	Hexadecimal	Available*2
SA\W	BIT	Hexadecimal	Available*2	Bit specification
SA\X	BIT	Hexadecimal	Available*2
SA\Y	BIT	Hexadecimal	Available*2
SB	BIT	Hexadecimal	Available
SD	WORD	Decimal	Available
SD	BIT	Decimal	Available	Bit specification
SM	BIT	Decimal	Available
ST	WORD	Decimal	Available	Able to obtain a current value (STN)
STC	BIT	Decimal	Available	Coil
STN	WORD	Decimal	Available	Current value
STS	BIT	Decimal	Available	Contact
SW	WORD	Hexadecimal	Available
SW	BIT	Hexadecimal	Available	Bit specification
T	WORD	Decimal	Available	Able to obtain a current value (TN)
TC	BIT	Decimal	Available	Coil
TN	WORD	Decimal	Available	Current value
TS	BIT	Decimal	Available	Contact
TR		Decimal	Unavailable	Non-monitorable device
U		Hexadecimal	Unavailable	Non-monitorable device
V	BIT	Decimal	Unavailable*1	Edge relay
VD			Unavailable
W	WORD	Hexadecimal	Available
W	BIT	Hexadecimal	Available	Bit specification
X	BIT	Hexadecimal	Available
Y	BIT	Hexadecimal	Available
Z	WORD	Decimal	Unavailable*1	Index register
ZR	WORD	Decimal	Available
ZR	BIT	Decimal	Available	Bit specification

*1 Supported by MX OPC Server UA, but unsupported by SCADA because these registers are usually not monitored.

*2 Safety registers can only be set to "read".

*3 Do not change the Global label (GV: *) address because it will be reflected in the configuration screen by file import.

List of Registers (FX5CPU)

Classification	Register Name	Register Type	Notation	Support Availability	Remarks
FX5CPU	B	BIT	Hexadecimal	Available
	BL		Decimal	Unavailable
	C	WORD	Decimal	Available	Able to obtain a current value (CN)
	CC	BIT	Decimal	Available	Coil
	CN	WORD	Decimal	Available	Current value
	CS	BIT	Decimal	Available	Contact
	D	WORD	Decimal	Available
	D	BIT	Decimal	Available	Bit specification
	DX			Unavailable
	DY			Unavailable
	E			Unavailable
	ER	WORD	Decimal	Unavailable
	F	BIT	Decimal	Available
	GV:	WORD	Hexadecimal	Available	Label memory (Global label) *2
	GV:	BIT	Hexadecimal	Available	Label memory (Global label) *2 Bit specification
	H			Unavailable
	I		Decimal	Unavailable	Non-monitorable device
	K			Unavailable
	L	BIT	Decimal	Available
	LC	DWORD	Decimal	Available	Able to obtain a current value (LCN)
	LCC	BIT	Decimal	Available	Coil
	LCN	DWORD	Decimal	Available	Current value
	LCS	BIT	Decimal	Available	Contact
	LZ	DWORD	Decimal		Long index register
	M	BIT	Decimal	Available
	N		Decimal	Unavailable	Non-monitorable device
	P		Decimal	Unavailable	Non-monitorable device
	R	WORD	Decimal	Available
	R	BIT	Decimal	Available	Bit specification
	S			Unavailable
	SB	BIT	Hexadecimal	Available
	SD	WORD	Decimal	Available
	SD	BIT	Decimal	Available	Bit specification
	SM	BIT	Decimal	Available
	ST	WORD	Decimal	Available	Able to obtain a current value (STN)
	STC	BIT	Decimal	Available	Coil
	STN	WORD	Decimal	Available	Current value
	STS	BIT	Decimal	Available	Contact
	SW	WORD	Hexadecimal	Available
	SW	BIT	Hexadecimal	Available	Bit specification
	T	WORD	Decimal	Available	Able to obtain a current value (TN)
	TC	BIT	Decimal	Available	Coil
	TN	WORD	Decimal	Available	Current value
	TS	BIT	Decimal	Available	Contact
	TR		Decimal	Unavailable	Non-monitorable device
	U*n\G	WORD		Available
	Un\G	BIT		Available	Bit specification
	W	WORD	Hexadecimal	Available
	W	BIT	Hexadecimal	Available	Bit specification
	X	BIT	Octal	Available
	Y	BIT	Octal	Available
	Z	WORD	Decimal	Unavailable*1	Index register

*1 Supported by MX OPC Server UA, but unsupported by SCADA because these registers are usually not monitored.

*2 Global label (GV*) will be reflected in the configuration screen by file import, but do not change the address.

List of Registers (QCPU)

Classification	Register Name	Register Type	Notation	Support Availability	Remarks
QnPRHCPU QnU(J)CPU QnUD(E)HCPU QnUDPVCPU QnUDVCPU	B	BIT	Hexadecimal	Available
	BL	BIT	Decimal	Unavailable	Non-monitorable device
	BL\S			Unavailable
	BL\TR			Unavailable
	C	WORD	Decimal	Available	Able to obtain a current value (CN)
	CC	BIT	Decimal	Available	Coil
	CN	WORD	Decimal	Available	Current value
	CS	BIT	Decimal	Available	Contact
	D	WORD	Decimal	Available
	D	BIT	Decimal	Available	Bit specification
	DX			Unavailable
	DY			Unavailable
	E			Unavailable
	F	BIT	Decimal	Available
	FD	WORD	Decimal	Unavailable
	FX	BIT	Hexadecimal	Unavailable
	FY	BIT	Hexadecimal	Unavailable
	H			Unavailable
	I		Decimal	Unavailable	Non-monitorable device
	J		Decimal	Unavailable	Non-monitorable device
	Jn\B	BIT	Hexadecimal	Available
	Jn\SB	BIT	Hexadecimal	Available
	Jn\SW	WORD	Hexadecimal	Available
	Jn\SW	BIT	Hexadecimal	Available
	Jn\W	WORD	Hexadecimal	Available
	Jn\W	BIT	Hexadecimal	Available
	Jn\X	BIT	Hexadecimal	Available
	Jn\Y	BIT	Hexadecimal	Available
	K			Unavailable
	L	BIT	Decimal	Available
	LZ			Unavailable
	M	BIT	Decimal	Available
	N		Decimal	Unavailable
	P		Decimal	Unavailable	Non-monitorable device
	R	WORD	Decimal	Available
	R	BIT	Decimal	Available	Bit specification
	RD	WORD	Decimal	Unavailable
	RD	BIT	Decimal	Unavailable	Bit specification
	S	BIT	Decimal	Unavailable	Non-monitorable device
	SB	BIT	Hexadecimal	Available
	SD	WORD	Decimal	Available
	SD	BIT	Decimal	Available	Bit specification
	SM	BIT	Decimal	Available
	ST	WORD	Decimal	Available	Able to obtain a current value (STN)
	STC	BIT	Decimal	Available	Coil
	STN	WORD	Decimal	Available	Current value
	STS	BIT	Decimal	Available	Contact
	SW	WORD	Hexadecimal	Available
	SW	BIT	Hexadecimal	Available	Bit specification
	T	WORD	Decimal	Available	Able to obtain a current value (TN)
	TC	BIT	Decimal	Available	Coil
	TN	WORD	Decimal	Available	Current value
	TS	BIT	Decimal	Available	Contact
	U		Hexadecimal	Unavailable	Non-monitorable device
	Un\G	WORD	Decimal	Available
	Un\G	BIT	Decimal	Available	Bit specification
	U3En\G	WORD	Decimal	Available
	U3En\G	BIT	Decimal	Available	Bit specification
	U3En\HG	WORD	Decimal	Available
	U3En\HG	BIT	Decimal	Available	Bit specification
	V	BIT	Decimal	Unavailable*1
	VD		Decimal	Unavailable	Non-monitorable device
	W	WORD	Hexadecimal	Available
	W	BIT	Hexadecimal	Available	Bit specification
X	BIT	Hexadecimal	Available
Y	BIT	Hexadecimal	Available
Z	WORD	Decimal	Unavailable*1
ZR	WORD	Decimal	Available
ZR	BIT	Decimal	Available	Bit specification

*1 Supported by MX OPC Server UA, but unsupported by SCADA because these registers are usually not monitored.

List of Registers (QSCPU)

Classification	Register Name	Register Type	Notation	Support Availability	Remarks
QSCPU	B	BIT	Hexadecimal	Available*2
	C	WORD	Decimal	Available	Able to obtain a current value (CN)
	CC	BIT	Decimal	Available*2	Coil
	CN	WORD	Decimal	Available*2	Current value
	CS	BIT	Decimal	Available*2	Contact
	D	WORD	Decimal	Available*2
	D	BIT	Decimal	Available*2	Bit specification
	E			Unavailable
	F	BIT	Decimal	Available*2
	H			Unavailable
	I			Unavailable
	K			Unavailable
	M	BIT	Decimal	Available*2
	N		Decimal	Unavailable	Non-monitorable device
	SB	BIT	Hexadecimal	Available*2
	SD	WORD	Decimal	Available*2
	SD	BIT	Decimal	Available*2	Bit specification
	SM	BIT	Decimal	Available*2
	ST	WORD	Decimal	Available	Able to obtain a current value (STN)
	STC	BIT	Decimal	Available*2	Coil
	STN	WORD	Decimal	Available*2	Current value
	STS	BIT	Decimal	Available*2	Contact
	SW	WORD	Hexadecimal	Available*2
	SW	BIT	Hexadecimal	Available*2	Bit specification
	T	WORD	Decimal	Available	Able to obtain a current value (TN)
	TC	BIT	Decimal	Available*2	Coil
	TN	WORD	Decimal	Available*2	Current value
	TS	BIT	Decimal	Available*2	Contact
	V	BIT	Decimal	Unavailable*1
	W	WORD	Hexadecimal	Available*2
	W	BIT	Hexadecimal	Available*2	Bit specification
	X	BIT	Hexadecimal	Available*2
	Y	BIT	Hexadecimal	Available*2

*1 Supported by MX OPC Server UA, but unsupported by SCADA because these registers are usually not monitored.

*2 Safety registers can only be set to "read".

List of Registers (LCPU)

Classification	Register Name	Register Type	Notation	Support Availability	Remarks
LnCPU	B	BIT	Hexadecimal	Available
	BL	BIT	Decimal	Unavailable	Non-monitorable device
	C	WORD	Decimal	Available	Able to obtain a current value (CN)
	CC	BIT	Decimal	Available	Coil
	CN	WORD	Decimal	Available	Current value
	CS	BIT	Decimal	Available	Contact
	D	WORD	Decimal	Available
	D	BIT	Decimal	Available	Bit specification
	DX			Unavailable
	DY			Unavailable
	E			Unavailable
	F	BIT	Decimal	Available
	FD	WORD	Decimal	Unavailable
	FX	BIT	Hexadecimal	Unavailable
	FY	BIT	Hexadecimal	Unavailable
	H			Unavailable
	I		Decimal	Unavailable	Non-monitorable device
	Jn\B	BIT	Hexadecimal	Unavailable
	Jn\SB	BIT	Hexadecimal	Available
	Jn\SW	WORD	Hexadecimal	Available
	Jn\SW	BIT	Hexadecimal	Available	Bit specification
	Jn\W	WORD	Hexadecimal	Available
	Jn\W	BIT	Hexadecimal	Available	Bit specification
	Jn\X	BIT	Hexadecimal	Available
	Jn\Y	BIT	Hexadecimal	Available
	K			Unavailable
	L	BIT	Decimal	Available
	LZ	DWORD		Unavailable
	M	BIT	Decimal	Available
	N		Decimal	Unavailable	Non-monitorable device
	P		Decimal	Unavailable	Non-monitorable device
	R	WORD	Decimal	Available
	R	BIT	Decimal	Available	Bit specification
	RD	WORD	Decimal	Unavailable
	RD	BIT	Decimal	Unavailable	Bit specification
	S	BIT	Decimal	Unavailable	Non-monitorable device
	SB	BIT	Hexadecimal	Available
	SD	WORD	Decimal	Available
	SD	BIT	Decimal	Available	Bit specification
	SM	BIT	Decimal	Available
	ST	WORD	Decimal	Available	Able to obtain a current value (STN)
	STC	BIT	Decimal	Available	Coil
	STN	WORD	Decimal	Available	Current value
	STS	BIT	Decimal	Available	Contact
	SW	WORD	Hexadecimal	Available
	SW	BIT	Hexadecimal	Available	Bit specification
	T	WORD	Decimal	Available	Able to obtain a current value (TN)
	TC	BIT	Decimal	Available	Coil
	TN	WORD	Decimal	Available	Current value
	TS	BIT	Decimal	Available	Contact
	U		Hexadecimal	Unavailable	Non-monitorable device
	Un\G	WORD	Decimal	Available
	Un\G	BIT	Decimal	Available	Bit specification
	U3E0\G	WORD	Decimal	Unavailable
	U3E0\G	BIT	Decimal	Unavailable	Bit specification
	V	BIT	Decimal	Unavailable
	VD		Decimal	Unavailable	Non-monitorable device
	W	WORD	Hexadecimal	Available
	W	BIT	Hexadecimal	Available	Bit specification
	X	BIT	Hexadecimal	Available
	Y	BIT	Hexadecimal	Available
	Z	WORD	Decimal	Unavailable*1
	ZR	WORD	Decimal	Available
	ZR	BIT	Decimal	Available	Bit specification

*1 Supported by MX OPC Server UA, but unsupported by SCADA because these registers are usually not monitored.

List of Registers (FXCPU)

Classification	Register Name	Register Type	Notation	Support Availability	Remarks
FX3CPU*3	C	WORD	Decimal	Available	Able to obtain a current value (CN)
	CC	BIT	Decimal	Available	Coil
	CN	WORD	Decimal	Available	Current value
	CS	BIT	Decimal	Available	Contact
	D	WORD	Decimal	Available
	D	BIT	Decimal	Available	Bit specification
	E			Unavailable
	ER	WORD	Decimal	Unavailable
	H			Unavailable
	I		Decimal	Unavailable	Non-monitorable device
	K			Unavailable
	M	BIT	Decimal	Available
	N		Decimal	Unavailable	Non-monitorable device
	P		Decimal	Unavailable	Non-monitorable device
	R	WORD	Decimal	Available*2
	R	BIT	Decimal	Available*2	Bit specification
	S	BIT	Decimal	Unavailable
	T	WORD	Decimal	Available	Able to obtain a current value (TN)
	TC	BIT	Decimal	Available	Coil
	TN	WORD	Decimal	Available	Current value
	TS	BIT	Decimal	Available	Contact
	Un\G			Unavailable
	V	BIT	Decimal	Unavailable
	X	BIT	Octal	Available
	Y	BIT	Octal	Available
	Z	WORD	Decimal	Unavailable

*1 Supported by MX OPC Server UA, but unsupported by SCADA because these registers are usually not monitored.

*2 This register is not supported by FX3S.

*3 This CPU does not support IoTWorX.

List of Registers (LHCPU)

Classification	Register Name	Register Type	Notation	Support Availability	Remarks
LHCPU	B	BIT	Hexadecimal	Available
	BL		Decimal	Unavailable
	C	WORD	Decimal	Available	Able to obtain a current value (CN)
	CC	BIT	Decimal	Available	Coil
	CN	WORD	Decimal	Available	Current value
	CS	BIT	Decimal	Available	Contact
	D	WORD	Decimal	Available
	D	BIT	Decimal	Available*3	Bit specification
	DX			Unavailable
	DY			Unavailable
	E			Unavailable
	F	BIT	Decimal	Available
	FD	BIT WORD	Decimal	Unavailable
	FX	BIT	Hexadecimal	Unavailable
	FY	BIT	Hexadecimal	Unavailable
	GV:	WORD	Hexadecimal	Available	Label memory (Global label) *2
	GV:	BIT	Hexadecimal	Available	Label memory (Global label) *2
	U*\G			Available
	U3E0\G			Available
	H			Unavailable
	I		Decimal	Unavailable	Non-monitorable device
	K			Unavailable
	J*n\B	BIT	Hexadecimal	Unavailable
	J*n \SB	BIT	Hexadecimal	Unavailable
	J*n \SW	WORD	Hexadecimal	Unavailable
	J*n \W	WORD	Hexadecimal	Unavailable
	J*n \X	BIT	Hexadecimal	Unavailable
	J*n \Y	BIT	Hexadecimal	Unavailable
	L	BIT	Decimal	Available
	LC	DWORD	Decimal	Available	Able to obtain a current value (LCN)
	LCC	BIT	Decimal	Available	Coil
	LCN	DWORD	Decimal	Available	Current value
	LCS	BIT	Decimal	Available	Contact
	LST	DWORD	Decimal	Available	Able to obtain a current value (LSTN)
	LSTC	BIT	Decimal	Available	Coil
	LSTN	DWORD	Decimal	Available	Current value
	LSTS	BIT	Decimal	Available	Contact
	LT	DWORD	Decimal	Available	Able to obtain a current value (LTN)
	LTC	BIT	Decimal	Available	Coil
	LTN	DWORD	Decimal	Available	Current value
	LTS	BIT	Decimal	Available	Contact
	LZ	DWORD	Decimal	Unavailable*1	Long index register
	M	BIT	Decimal	Available
	N		Decimal	Unavailable	Non-monitorable device
	P		Decimal	Unavailable	Non-monitorable device
	R	WORD	Decimal	Available
	R	BIT	Decimal	Available	Bit specification
	RD	WORD	Decimal	Unavailable*1	Refresh data register
	RD	BIT	Decimal	Unavailable*1	Refresh data register
	S	BIT	Decimal	Unavailable	Non-monitorable device
	SB	BIT	Hexadecimal	Available
	SD	WORD	Decimal	Available
	SD	BIT	Decimal	Available	Bit specification
	SM	BIT	Decimal	Available
	ST	WORD	Decimal	Available	Able to obtain a current value (STN)
	STC	BIT	Decimal	Available	Coil
	STN	WORD	Decimal	Available	Current value
	STS	BIT	Decimal	Available	Contact
	SW	WORD	Hexadecimal	Available
	SW	BIT	Hexadecimal	Available	Bit specification
	T	WORD	Decimal	Available	Able to obtain a current value (TN)
	TC	BIT	Decimal	Available	Coil
	TN	WORD	Decimal	Available	Current value
	TR		Decimal	Unavailable	Non-monitorable device
TS	BIT	Decimal	Available	Contact
U		Hexadecimal	Unavailable	Non-monitorable device
Un\G	WORD	Decimal	Available
Un\G	BIT	Decimal	Available	Bit specification
U3E0\G	WORD	Decimal	Available
U3E0\G	BIT	Decimal	Available	Bit specification
V	BIT	Decimal	Unavailable*1	Edge relay
W	WORD	Hexadecimal	Available
W	BIT	Hexadecimal	Available	Bit specification
X	BIT	Hexadecimal	Available
Y	BIT	Hexadecimal	Available
Z	WORD	Decimal	Unavailable*1	Index register
ZR	WORD	Decimal	Available
ZR	BIT	Decimal	Available	Bit specification

*1 Supported by MX OPC Server UA, but unsupported by SCADA because these registers are usually not monitored.

*2 Global label (GV*) will be reflected in the configuration screen by file import, but do not change the address.